| Page | |
| 
                 3 
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| 
                 7 
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| 
                 17 
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| 
                 17 
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            |
| 
                 17 
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            |
| 
                 18 
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| 
                 26 
               | 
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| 
                 27 
               | 
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                 28 
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| 
                 28 
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| 
                 28 
               | 
            |
| 
                 28 
               | 
            
| 
                 Common
                  stock offered by the selling security holders 
               | 
              
                 8,244,880
                  shares 
               | 
            
| 
                 Common
                  stock outstanding prior to this offering 
               | 
              
                 37,223,236
                  shares 
               | 
            
| 
                 Common
                  stock to be outstanding after this offering 
               | 
              
                 39,971,533
                  shares(1) 
               | 
            
| 
                 Use
                  of proceeds 
               | 
              
                 All
                  proceeds of this offering will be received by selling security
                  holders for
                  their own accounts. See “Use of Proceeds.” 
               | 
            
| 
                 Nasdaq
                  National Market symbol 
               | 
              
                 PEIX 
               | 
            
| 
                 · 
               | 
              
                 76,000
                  shares of common stock reserved for issuance under our Amended
                  1995
                  Incentive Stock Plan, of which options to purchase 76,000 shares
                  were
                  outstanding as of that date, at a weighted average exercise price
                  of $5.95
                  per share;  
               | 
            
| 
                 · 
               | 
              
                 1,677,500
                  shares of common stock reserved for issuance under our 2004 Stock
                  Option
                  Plan, of which options to purchase 665,000 shares were outstanding
                  as of
                  that date, at a weighted average exercise price of $7.83 per share;
                   
               | 
            
| 
                 · 
               | 
              
                 216,251
                  shares of common stock underlying warrants outstanding as of that
                  date,
                  not including shares of common stock underlying warrants and offered
                  under
                  this prospectus, at a weighted average exercise price of $2.21
                  per share;
                  and 
               | 
            
| 
                 · 
               | 
              
                 any
                  additional shares of common stock we may issue from time to time
                  after
                  that date. 
               | 
            
| 
                   Three
                    Months Ended March
                    31, 
                 | 
                
                     Year Ended
                    December 31, 
                 | 
                |||||||||||||||
| 
                   2006 
                 | 
                
                   2005 
                 | 
                
                   2005 
                 | 
                
                   2004 
                 | 
                
                   2003 
                 | 
                ||||||||||||
| 
                   Consolidated
                    Statements of Operations Data and other Comprehensive
                    Income: 
                 | 
                 
                   | 
                 
                   | 
                
                   | 
                
                   | 
                
                   | 
                |||||||||||
| 
                   Net
                    sales 
                 | 
                
                   $ 
                 | 
                
                   38,239,167 
                 | 
                
                   $ 
                 | 
                
                   2,301,997 
                 | 
                
                   $ 
                 | 
                
                   87,599,012 
                 | 
                
                   $ 
                 | 
                
                   19,764 
                 | 
                
                   $ 
                 | 
                
                   1,016,594 
                 | 
                ||||||
| 
                   Cost
                    of goods sold 
                 | 
                
                   35,913,920 
                 | 
                
                   2,254,370 
                 | 
                
                   84,444,183 
                 | 
                
                   12,523 
                 | 
                
                   946,012 
                 | 
                |||||||||||
| 
                   Gross
                    profit 
                 | 
                
                   2,325,247 
                 | 
                
                   47,627 
                 | 
                
                   3,154,829 
                 | 
                
                   7,241 
                 | 
                
                   70,582 
                 | 
                |||||||||||
| 
                   Selling,
                    general and administrative expenses 
                 | 
                
                   2,984,084 
                 | 
                
                   743,233 
                 | 
                
                   10,994,630 
                 | 
                
                   2,277,510 
                 | 
                
                   647,731 
                 | 
                |||||||||||
| 
                   Feasibility
                    study expensed in connection with acquisition of ReEnergy 
                 | 
                
                   --
                     
                 | 
                
                   852,250 
                 | 
                
                   852,250 
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                |||||||||||
| 
                   Acquisition
                    cost expense in excess of cash received 
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                
                   480,948 
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                |||||||||||
| 
                   Discontinued
                    design of cogeneration facility 
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                
                   310,522 
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                |||||||||||
| 
                   Loss
                    from operations 
                 | 
                
                   (658,837 
                 | 
                
                   ) 
                 | 
                
                   (1,547,856 
                 | 
                
                   ) 
                 | 
                
                   (9,483,521 
                 | 
                
                   ) 
                 | 
                
                   (2,270,269 
                 | 
                
                   ) 
                 | 
                
                   (577,149 
                 | 
                
                   ) 
                 | 
              ||||||
| 
                   Total
                    other income (expense) 
                 | 
                
                   51,779 
                 | 
                
                   (107,853 
                 | 
                
                   ) 
                 | 
                
                   (433,998 
                 | 
                
                   ) 
                 | 
                
                   (530,698 
                 | 
                
                   ) 
                 | 
                
                   (279,930 
                 | 
                
                   ) 
                 | 
              |||||||
| 
                   Loss
                    from operations before income taxes 
                 | 
                
                   (607,058 
                 | 
                
                   ) 
                 | 
                
                   (1,655,709 
                 | 
                
                   ) 
                 | 
                
                   (9,917,519 
                 | 
                
                   ) 
                 | 
                
                   (2,800,967 
                 | 
                
                   ) 
                 | 
                
                   (857,079 
                 | 
                
                   ) 
                 | 
              ||||||
| 
                   Provision
                    for income taxes 
                 | 
                
                   4,705 
                 | 
                
                   1,600 
                 | 
                
                   5,600 
                 | 
                
                   1,600
                     
                 | 
                
                   1,600 
                 | 
                |||||||||||
| 
                   Net
                    loss 
                 | 
                
                   $ 
                 | 
                
                   (611,763 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (1,657,309 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (9,923,119 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (2,802,567 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (858,679 
                 | 
                
                   ) 
                 | 
              |
| 
                   Other
                    comprehensive income, net of tax: 
                 | 
                ||||||||||||||||
| 
                   Cash
                    flow hedges: 
                 | 
                ||||||||||||||||
| 
                   Net
                    change in the fair value of derivatives 
                 | 
                
                   674,208 
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                
                   --
                     
                 | 
                |||||||||||
| 
                   Comprehensive
                    income (loss) 
                 | 
                
                   $ 
                 | 
                
                   62,445 
                 | 
                
                   $ 
                 | 
                
                   (1,657,309 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (9,923,119 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (2,802,567 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (858,679 
                 | 
                
                   ) 
                 | 
              ||
| 
                   Loss
                    per share, basic and diluted 
                 | 
                
                   $ 
                 | 
                
                   (0.02 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (0.10 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (0.40 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (0.23 
                 | 
                
                   ) 
                 | 
                
                   $ 
                 | 
                
                   (0.07 
                 | 
                
                   ) 
                 | 
              |
| 
                   Weighted-average
                    shares outstanding, basic and diluted 
                 | 
                
                   29,587,193 
                 | 
                
                   16,257,942 
                 | 
                
                   25,065,872 
                 | 
                
                   12,396,895 
                 | 
                
                   11,733,200 
                 | 
                |||||||||||
| 
                   Consolidated
                    Balance Sheet Data: 
                 | 
                ||||||||||||||||
| 
                   Cash
                    and cash equivalents 
                 | 
                
                   $ 
                 | 
                
                   4,200,902 
                 | 
                
                   $ 
                 | 
                
                   20,743,553 
                 | 
                
                   $ 
                 | 
                
                   4,521,111 
                 | 
                
                   $ 
                 | 
                
                   42 
                 | 
                
                   $ 
                 | 
                
                   249,084 
                 | 
                ||||||
| 
                   Working
                    capital (deficit) 
                 | 
                
                   (10,569,314 
                 | 
                
                   ) 
                 | 
                
                   19,218,405 
                 | 
                
                   (2,894,133 
                 | 
                
                   ) 
                 | 
                
                   (1,024,747 
                 | 
                
                   ) 
                 | 
                
                   (357,576 
                 | 
                
                   ) 
                 | 
              |||||||
| 
                   Total
                    assets 
                 | 
                
                   63,532,812 
                 | 
                
                   41,658,982 
                 | 
                
                   48,184,812 
                 | 
                
                   7,179,263 
                 | 
                
                   6,559,634 
                 | 
                |||||||||||
| 
                   Stockholders’
                    equity 
                 | 
                
                   34,881,141 
                 | 
                
                   32,745,745 
                 | 
                
                   28,515,431 
                 | 
                
                   1,355,732 
                 | 
                
                   1,367,828 
                 | 
                |||||||||||
| 
                 Year
                  Ended 
                December
                  31, 2005 
               | 
              
                 Year
                  Ended 
                December
                  31, 2004 
               | 
              ||||||||||||
| 
                 | 
              
                 Pacific
                  Ethanol 
               | 
              
                 Pro
                  Forma 
                Pacific
                  Ethanol 
                and
                  Acquisitions 
               | 
              
                 Pacific
                  Ethanol 
               | 
              
                 Pro
                  Forma 
                Pacific
                  Ethanol 
                and
                  Acquisitions 
               | 
              |||||||||
| 
                 Consolidated
                  Statements of Operations Data: 
               | 
              
                 (unaudited 
               | 
              
                 ) 
               | 
              
                 (unaudited 
               | 
              
                 ) 
               | 
            |||||||||
| 
                 Net
                  sales 
               | 
              
                 $ 
               | 
              
                 87,599,012 
               | 
              
                 $ 
               | 
              
                 111,186,711 
               | 
              
                 $ 
               | 
              
                 19,764 
               | 
              
                 $ 
               | 
              
                 82,810,168 
               | 
              |||||
| 
                 Cost
                  of goods sold 
               | 
              
                 84,444,183 
               | 
              
                 107,644,784 
               | 
              
                 12,523 
               | 
              
                 79,593,420 
               | 
              |||||||||
| 
                 | 
              |||||||||||||
| 
                 Gross
                  profit 
               | 
              
                 3,154,829 
               | 
              
                 3,541,927 
               | 
              
                 7,241 
               | 
              
                 3,216,748 
               | 
              |||||||||
| 
                 Selling,
                  general and administrative expenses 
               | 
              
                 10,994,630 
               | 
              
                 11,287,945 
               | 
              
                 2,277,510 
               | 
              
                 5,532,721 
               | 
              |||||||||
| 
                 Feasibility
                  study expensed in connection with acquisition of ReEnergy 
               | 
              
                 852,250 
               | 
              
                 852,250 
               | 
              
                 --
                   
               | 
              
                 852,250 
               | 
              |||||||||
| 
                 Acquisition
                  cost expense in excess of cash received 
               | 
              
                 480,948 
               | 
              
                 480,948 
               | 
              
                 --
                   
               | 
              
                 --
                   
               | 
              |||||||||
| 
                 Discontinued
                  design of cogeneration facility 
               | 
              
                 310,522 
               | 
              
                 310,522 
               | 
              
                 --
                   
               | 
              
                 --
                   
               | 
              |||||||||
| 
                 | 
              |||||||||||||
| 
                 Loss
                  from operations 
               | 
              
                 (9,483,521 
               | 
              
                 ) 
               | 
              
                 (9,389,738 
               | 
              
                 ) 
               | 
              
                 (2,270,269 
               | 
              
                 ) 
               | 
              
                 (3,168,223 
               | 
              
                 ) 
               | 
            |||||
| 
                 Total
                  other expense 
               | 
              
                 (433,998 
               | 
              
                 ) 
               | 
              
                 (433,998 
               | 
              
                 ) 
               | 
              
                 (530,698 
               | 
              
                 ) 
               | 
              
                 (535,535 
               | 
              
                 ) 
               | 
            |||||
| 
                 | 
              |||||||||||||
| 
                 Loss
                  from operations before income taxes 
               | 
              
                 (9,917,519 
               | 
              
                 ) 
               | 
              
                 (9,823,736 
               | 
              
                 ) 
               | 
              
                 (2,800,967 
               | 
              
                 ) 
               | 
              
                 (3,703,758 
               | 
              
                 ) 
               | 
            |||||
| 
                 Provision
                  for income taxes 
               | 
              
                 5,600 
               | 
              
                 5,600 
               | 
              
                 1,600 
               | 
              
                 2,400 
               | 
              |||||||||
| 
                 | 
              |||||||||||||
| 
                 Net
                  loss 
               | 
              
                 $ 
               | 
              
                 (9,923,119 
               | 
              
                 ) 
               | 
              
                 $ 
               | 
              
                 (9,829,336 
               | 
              
                 ) 
               | 
              
                 $ 
               | 
              
                 (2,802,567 
               | 
              
                 ) 
               | 
              
                 $ 
               | 
              
                 (3,706,158 
               | 
              
                 ) 
               | 
            |
| 
                 | 
              |||||||||||||
| 
                 Loss
                  per share, basic and diluted 
               | 
              
                 $ 
               | 
              
                 (0.40 
               | 
              
                 ) 
               | 
              
                 $ 
               | 
              
                 (0.35 
               | 
              
                 ) 
               | 
              
                 $ 
               | 
              
                 (0.23 
               | 
              
                 ) 
               | 
              
                 $ 
               | 
              
                 (0.14 
               | 
              
                 ) 
               | 
            |
| 
                 | 
              |||||||||||||
| 
                 Weighted-average
                  shares outstanding, basic and diluted 
               | 
              
                 25,065,782 
               | 
              
                 28,192,572 
               | 
              
                 12,396,895 
               | 
              
                 26,486,347 
               | 
              |||||||||
| 
                 · 
               | 
              
                 changing
                  conditions in the ethanol and fuel markets; 
               | 
            
| 
                 · 
               | 
              
                 the
                  volume and timing of the receipt of orders for ethanol from major
                  customers; 
               | 
            
| 
                 · 
               | 
              
                 competitive
                  pricing pressures; 
               | 
            
| 
                 · 
               | 
              
                 our
                  ability to produce, sell and deliver ethanol on a cost-effective
                  and
                  timely basis; 
               | 
            
| 
                 · 
               | 
              
                 the
                  introduction and announcement of one or more new alternatives to
                  ethanol
                  by our competitors; 
               | 
            
| 
                 · 
               | 
              
                 changes
                  in market valuations of similar companies; 
               | 
            
| 
                 · 
               | 
              
                 stock
                  market price and volume fluctuations generally; 
               | 
            
| 
                 · 
               | 
              
                 regulatory
                  developments or increased enforcement; 
               | 
            
| 
                 · 
               | 
              
                 fluctuations
                  in our quarterly or annual operating results; 
               | 
            
| 
                 · 
               | 
              
                 additions
                  or departures of key personnel; 
               | 
            
| 
                 · 
               | 
              
                 our
                  inability to obtain construction, acquisition, capital equipment
                  and/or
                  working capital financing; and 
               | 
            
| 
                 · 
               | 
              
                 future
                  sales of our common stock or other
                  securities. 
               | 
            
| 
                 · 
               | 
              
                 D.E.
                  Shaw Valence Portfolios, L.L.C. is an affiliate of two NASD-registered
                  broker-dealers, one of which is controlled by D.E. Shaw Valence
                  Portfolios, L.L.C. and the other of which is under common control
                  with
                  D.E. Shaw Valence Portfolios, L.L.C.; 
               | 
            
| 
                 · 
               | 
              
                 Capital
                  Ventures International is affiliated with one or more NASD-registered
                  broker-dealers by virtue of common control; 
               | 
            
| 
                 · 
               | 
              
                 Stewart
                  Flink, a Managing Member of Crestview Capital Master, LLC, is the
                  controlling shareholder of Dillon Capital, Inc., an NASD-registered
                  broker-dealer; 
               | 
            
| 
                 · 
               | 
              
                 Evolution
                  Capital Management, LLC, the investment advisor of Evolution Master
                  Fund
                  Ltd. SPC, indirectly owns Tora Trading, LLC, an NASD-registered
                  broker-dealer; 
               | 
            
| 
                 · 
               | 
              
                 Hudson
                  Bay Fund LP is affiliated with XTF Market Making LLC and XTF Capital
                  LLC,
                  both of whom are NASD-registered broker-dealers. Sander Gerber
                  is Managing
                  Member of XTF Market Making LLC and XTF Capital LLC and is also
                  a Managing
                  Member of Hudson Bay Capital Associates LLC, which is the general
                  partner
                  of Hudson Bay Fund LP; 
               | 
            
| 
                 · 
               | 
              
                 Shepherd
                  Investments International, Ltd. is affiliated with Reliant Trading
                  and
                  Shepherd Trading Limited, each of which is an NASD-registered
                  broker-dealer; 
               | 
            
| 
                 · 
               | 
              
                 Enable
                  Growth Partners LP is affiliated with Enable Capital LLC, an
                  NASD-registered broker-dealer. Mitch Levine is the Managing Member
                  of
                  Enable Capital LLC and is also a principal in Enable Capital Management,
                  LLC, the general partner of Enable Growth Partners LP; 
               | 
            
| 
                 · 
               | 
              
                 Portside
                  Growth and Opportunity Fund’s investment advisor is Ramius Capital Group,
                  L.L.C. Ramius Capital Group, L.L.C. is affiliated with an NASD-registered
                  broker-dealer; 
               | 
            
| 
                 · 
               | 
              
                 SF
                  Capital Partners Ltd. is affiliated with Reliant Trading and Shepherd
                  Trading Limited, each of which is an NASD-registered
                  broker-dealer; 
               | 
            
| 
                 · 
               | 
              
                 Stark
                  Trading is affiliated with Reliant Trading and Shepherd Trading
                  Limited,
                  each of which is an NASD-registered broker-dealer; 
               | 
            
| 
                 · 
               | 
              
                 Enable
                  Opportunity Partners LP is affiliated with Enable Capital LLC,
                  an
                  NASD-registered broker-dealer. Mitch Levine is the Managing Member
                  of
                  Enable Capital LLC and is also a principal in Enable Capital Management,
                  LLC, the general partner of Enable Opportunity Partners LP;
                  and 
               | 
            
| 
                 · 
               | 
              
                 Pierce
                  Diversified Strategy Master Fund LLC, Ena is affiliated with Enable
                  Capital LLC, an NASD-registered broker-dealer. Mitch Levine is
                  the
                  Managing Member of Enable Capital LLC and is also a principal in
                  Enable
                  Capital Management, LLC, the Manager of Pierce Diversified Strategy
                  Master
                  Fund LLC, Ena. 
               | 
            
| 
                  Name
                  of 
               | 
              
                 Shares
                  of Common Stock 
                Beneficially
                  Owned 
                          Prior
                  to Offering 
               | 
               
                 Shares
                  of Common Stock 
                Being 
               | 
              
                  Shares
                  of Common
                  Stock Beneficially
                  Owned After
                  Offering    
               | 
              |||||||||||||||||||
| 
                  Beneficial
                  Owner 
               | 
              
                  Number 
               | 
              
                 Percentage 
               | 
              
                  Offered 
               | 
              
                 Number 
               | 
              
                 Percentage 
               | 
              |||||||||||||||||
| 
                 D.E.
                  Shaw Valence Portfolios, L.L.C. 
               | 
              
                 1,200,000 
               | 
              
                 (1 
               | 
              
                 ) 
               | 
              
                 3.19 
               | 
              
                 % 
               | 
              
                 1,200,000 
               | 
              
                 (1 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              ||||||||||||
| 
                 Capital
                  Ventures International 
               | 
              
                 568,613 
               | 
              
                 (2 
               | 
              
                 ) 
               | 
              
                 1.52 
               | 
              
                 % 
               | 
              
                 568,613 
               | 
              
                 (2 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              ||||||||||||
| 
                 Ardsley
                  Offshore Fund, Ltd. 
               | 
              
                 483,321 
               | 
              
                 (3 
               | 
              
                 ) 
               | 
              
                 1.29 
               | 
              
                 % 
               | 
              
                 483,321 
               | 
              
                 (3 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              ||||||||||||
| 
                 Crestview
                  Capital Master, LLC 
               | 
              
                 450,000 
               | 
              
                 (4 
               | 
              
                 ) 
               | 
              
                 1.20 
               | 
              
                 % 
               | 
              
                 450,000 
               | 
              
                 (4 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              ||||||||||||
| 
                 QVT
                  Fund LP 
               | 
              
                 426,459 
               | 
              
                 (5 
               | 
              
                 ) 
               | 
              
                 1.14 
               | 
              
                 % 
               | 
              
                 426,459 
               | 
              
                 (5 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              ||||||||||||
| 
                 Ardsley
                  Partners Fund II, L.P. 
               | 
              
                 398,028 
               | 
              
                 (6 
               | 
              
                 ) 
               | 
              
                 1.07 
               | 
              
                 % 
               | 
              
                 398,028 
               | 
              
                 (6 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              ||||||||||||
| 
                 Evolution
                  Master Fund Ltd. SPC, Segregated Portfolio M 
               | 
              
                 341,250 
               | 
              
                 (7 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 341,250 
               | 
              
                 (7 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Hudson
                  Bay Fund, LP 
               | 
              
                 375,048 
               | 
              
                 (8 
               | 
              
                 ) 
               | 
              
                 1.00 
               | 
              
                 % 
               | 
              
                 298,521 
               | 
              
                 (8 
               | 
              
                 ) 
               | 
              
                 76,527 
               | 
              
                 * 
               | 
              ||||||||||||
| 
                 Credit
                  Suisse Trust-Small Cap Growth Portfolio 
               | 
              
                 294,597 
               | 
              
                 (9 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 294,597 
               | 
              
                 (9 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Highbridge
                  International LLC 
               | 
              
                 284,306 
               | 
              
                 (10 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 284,306 
               | 
              
                 (10 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Iroquois
                  Master Fund, Ltd. 
               | 
              
                 284,306 
               | 
              
                 (11 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 284,306 
               | 
              
                 (11 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Cranshire
                  Capital, L.P. 
               | 
              
                 284,306 
               | 
              
                 (12 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 284,306 
               | 
              
                 (12 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Ardsley
                  Partners Institutional Fund, L.P. 
               | 
              
                 244,503 
               | 
              
                 (13 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 244,503 
               | 
              
                 (13 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Radcliffe
                  SPC, Ltd. for and on behalf of the Class A Convertible Crossover
                  Segregated Portfolio 
               | 
              
                 225,059 
               | 
              
                 (14 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 225,059 
               | 
              
                 (14 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Shepherd
                  Investments International, Ltd. 
               | 
              
                 225,000 
               | 
              
                 (15 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 225,000 
               | 
              
                 (15 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Enable
                  Growth Partners LP 
               | 
              
                 170,585 
               | 
              
                 (16 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 170,585 
               | 
              
                 (16 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Telluride
                  Capital Master Fund Ltd. 
               | 
              
                 165,000 
               | 
              
                 (17 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 165,000 
               | 
              
                 (17 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Rockmore
                  Investment Master Fund Ltd. 
               | 
              
                 165,000 
               | 
              
                 (18 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 165,000 
               | 
              
                 (18 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Portside
                  Growth and Opportunity Fund 
               | 
              
                 150,000 
               | 
              
                 (19 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 150,000 
               | 
              
                 (19 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 SF
                  Capital Partners Ltd. 
               | 
              
                 150,000 
               | 
              
                 (20 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 150,000 
               | 
              
                 (20 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 JMG
                  Capital Partners, LP 
               | 
              
                 150,000 
               | 
              
                 (21 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 150,000 
               | 
              
                 (21 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 JMG
                  Triton Offshore Fund, Ltd. 
               | 
              
                 150,000 
               | 
              
                 (22 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 150,000 
               | 
              
                 (22 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 UBS
                  O’Connor LLC fbo O’Connor PIPES Corporate Strategies Master
                  Limited 
               | 
              
                 112,500 
               | 
              
                 (23 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 112,500 
               | 
              
                 (23 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Nite
                  Capital LP 
               | 
              
                 112,500 
               | 
              
                 (24 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 112,500 
               | 
              
                 (24 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 SDS
                  Capital Group SPC, Ltd. 
               | 
              
                 112,500 
               | 
              
                 (25 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 112,500 
               | 
              
                 (25 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Gryphon
                  Master Fund, L.P. 
               | 
              
                 110,000 
               | 
              
                 (26 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 110,000 
               | 
              
                 (26 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Kamunting
                  Street Master Fund, Ltd. 
               | 
              
                 82,500 
               | 
              
                 (27 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 82,500 
               | 
              
                 (27 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Precept
                  Capital Master Fund, G.P. 
               | 
              
                 82,500 
               | 
              
                 (28 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 82,500 
               | 
              
                 (28 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Stark
                  Trading 
               | 
              
                 75,000 
               | 
              
                 (29 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 75,000 
               | 
              
                 (29 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 CAMOFI
                  Master LDC 
               | 
              
                 67,500 
               | 
              
                 (30 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 67,500 
               | 
              
                 (30 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Cordillera
                  Fund, L.P. 
               | 
              
                 56,861 
               | 
              
                 (31 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 56,861 
               | 
              
                 (31 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 GSSF
                  Master Fund, LP 
               | 
              
                 55,001 
               | 
              
                 (32 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 55,001 
               | 
              
                 (32 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 UBS
                  O’Connor LLC fbo UBS Global Equity Arbitrage Master
                  Limited 
               | 
              
                 51,500 
               | 
              
                 (33 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 37,500 
               | 
              
                 (33 
               | 
              
                 ) 
               | 
              
                 14,000 
               | 
              
                 * 
               | 
              |||||||||||||
| 
                 Credit
                  Suisse Global Small Cap Fund, Inc. 
               | 
              
                 34,500 
               | 
              
                 (34 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 34,500 
               | 
              
                 (34 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Credit
                  Suisse Trust-Global Small Cap Portfolio 
               | 
              
                 34,500 
               | 
              
                 (35 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 34,500 
               | 
              
                 (35 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Enable
                  Opportunity Partners LP 
               | 
              
                 34,116 
               | 
              
                 (36 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 34,116 
               | 
              
                 (36 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Ridgecrest
                  Partners QP, L.P. 
               | 
              
                 30,150 
               | 
              
                 (37 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 30,150 
               | 
              
                 (37 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Civic
                  Capital Fund I, LLC 
               | 
              
                 41,230 
               | 
              
                 (38 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 28,430 
               | 
              
                 (38 
               | 
              
                 ) 
               | 
              
                 12,800 
               | 
              
                 * 
               | 
              |||||||||||||
| 
                 Pierce
                  Diversified Strategy Master Fund LLC, Ena 
               | 
              
                 22,745 
               | 
              
                 (39 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 22,745 
               | 
              
                 (39 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Marion
                  Lynton 
               | 
              
                 11,373 
               | 
              
                 (40 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 11,373 
               | 
              
                 (40 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Advantage
                  Advisors Catalyst Partners L.P. 
               | 
              
                 10,500 
               | 
              
                 (41 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 10,500 
               | 
              
                 (41 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Advantage
                  Advisors Catalyst International Ltd. 
               | 
              
                 10,200 
               | 
              
                 (42 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 10,200 
               | 
              
                 (42 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Ridgecrest
                  Partners Ltd. 
               | 
              
                 7,650 
               | 
              
                 (43 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 7,650 
               | 
              
                 (43 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Credit
                  Suisse Small Cap Growth Fund, Inc. 
               | 
              
                 6,000 
               | 
              
                 (44 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 6,000 
               | 
              
                 (44 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 Ridgecrest
                  Partners L.P. 
               | 
              
                 1,500 
               | 
              
                 (45 
               | 
              
                 ) 
               | 
              
                 * 
               | 
              
                 1,500 
               | 
              
                 (45 
               | 
              
                 ) 
               | 
              
                 - 
               | 
              
                 - 
               | 
              |||||||||||||
| 
                 (1) 
               | 
              
                 Includes
                  400,000 shares underlying warrants. D. E. Shaw & Co., L.P., as
                  investment advisor, has voting and investment power over the shares.
                  Anne
                  Dinning, Julius Gaudio, Maximilian Stone and Eric Wepsic, or their
                  designees, exercise voting and investment power over the shares
                  on behalf
                  of D. E. Shaw & Co., L.P. 
               | 
            
| 
                 (2) 
               | 
              
                 Includes
                  189,538 shares underlying warrants. Heights Capital Management,
                  Inc., the
                  authorized agent of Capital Ventures International, has discretionary
                  authority to vote and dispose of the shares and may be deemed to
                  be the
                  beneficial owner of these shares. Martin Kobinger, in his capacity
                  as
                  Investment Manager of Heights Capital Management, Inc., may also
                  be deemed
                  to have investment discretion and voting power over the shares.
                  Mr.
                  Kobinger disclaims any such beneficial ownership of the
                  shares. 
               | 
            
| 
                 (3) 
               | 
              
                 Includes
                  161,107 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Philip J. Hempleman as Managing General Partner and
                  Portfolio
                  Manager of Ardsley Offshore Fund, Ltd. In addition, an aggregate
                  of
                  217,968 shares underlying warrants and an aggregate of 435,936
                  shares of
                  common stock are held by Ardsley Partners Fund II, L.P., Ardsley
                  Partners
                  Institutional Fund, L.P. and Marion Lynton, which shares are also
                  offered
                  under this prospectus, the power to vote or dispose of which is
                  also held
                  by Mr. Hempleman. 
               | 
            
| 
                 (4) 
               | 
              
                 Includes
                  150,000 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is shared by Daniel Warsh, Stewart Flink and Robert Hoyt as Managing
                  Members of Crestview Capital Master, LLC. 
               | 
            
| 
                 (5) 
               | 
              
                 Includes
                  142,153 shares underlying warrants. Management of QVT Fund LP is
                  vested in
                  its general partner, QVT Associates GP LLC. QVT Financial LP is
                  the
                  Investment Manager for QVT Fund LP and shares voting and investment
                  control of the shares securities held by QVT Fund LP. QVT Financial
                  GP LLC
                  is the general partner of QVT Financial LP and as such has complete
                  discretion in the management and control of the business affairs
                  of QVT
                  Financial LP. The Managing Members of QVT Financial GP LLC are
                  Daniel
                  Gold, Lars Bader, Tracy Fu and Nicholas Brumm. Each of QVT Financial
                  LP,
                  QVT Financial GP LLC, Daniel Gold, Lars Bader, Tracy Fu and Nicholas
                  Brumm
                  disclaims beneficial ownership of the securities held by QVT Fund
                  LP. 
               | 
            
| 
                 (6) 
               | 
              
                 Includes
                  132,676 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Philip J. Hempleman as Managing General Partner and
                  Portfolio
                  Manager of Ardsley Partners Fund II, L.P. In addition, an aggregate
                  of
                  246,399 shares underlying warrants and an aggregate of 492,798
                  shares of
                  common stock are held by Ardsley Offshore Fund, Ltd., Ardsley Partners
                  Institutional Fund, L.P. and Marion Lynton, which shares are also
                  offered
                  under this prospectus, the power to vote or dispose of which is
                  also held
                  by Mr. Hempleman. 
               | 
            
| 
                 (7) 
               | 
              
                 Includes
                  113,750 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Michael Lerch as Chief Investment Officer of Evolution
                  Capital
                  Management, LLC, the investment advisor of Evolution Master Fund
                  Ltd. SPC,
                  Segregated Portfolio M. 
               | 
            
| 
                 (8) 
               | 
              
                 Includes
                  99,507 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is shared by Yoav Roth, Principal and Portfolio Manager, and John
                  Doscas,
                  President, of Hudson Bay Fund LP. Messrs. Roth and Doscas disclaim
                  beneficial ownership of the securities held by Hudson Bay Fund
                  LP.
                   
               | 
            
| 
                 (9) 
               | 
              
                 Includes
                  98,199 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Laura Granger, as Managing Director and Portfolio Manager
                  of
                  Credit Suisse Asset Management, LLC, as Investment Advisor of Credit
                  Suisse Trust-Small Cap Growth Portfolio. In addition, an aggregate
                  of
                  25,000 shares underlying warrants and an aggregate of 50,000 shares
                  of
                  common stock are held by Credit
                  Suisse Global Small Cap Fund, Inc.,
                  Credit
                  Suisse Trust-Global Small Cap Portfolio and
                  Credit
                  Suisse Small Cap Growth Fund, Inc.,
                  which shares are also offered under this prospectus, the power
                  to vote or
                  dispose of which is also held by Ms. Granger. 
               | 
            
| 
                 (10) 
               | 
              
                 Includes
                  94,769 shares underlying warrants. Highbridge Capital Management,
                  LLC is
                  the trading manager of Highbridge International LLC and has voting
                  control
                  and investment direction over the shares. Glenn Dubin and Henry
                  Swieca
                  control Highbridge Capital Management, LLC. Each of Highbridge
                  Capital
                  Management, LLC, Glenn Dubin and Henry Swieca disclaim beneficial
                  ownership of the shares. 
               | 
            
| 
                 (11) 
               | 
              
                 Includes
                  94,769 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Joshua Silverman as Authorized Signatory of Iroquois
                  Master
                  Fund, Ltd. Mr. Silverman disclaims beneficial ownership of the
                  shares. 
               | 
            
| 
                 (12) 
               | 
              
                 Includes
                  94,769 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Mitchell P. Kopin as President of Downsview Capital,
                  Inc., as
                  General Partner of Cranshire Capital, L.P. Mr. Kopin and Downsview
                  Capital, Inc. both disclaim beneficial ownership of the
                  shares. 
               | 
            
| 
                 (13) 
               | 
              
                 Includes
                  81,501 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Philip J. Hempleman as Managing General Partner and
                  Portfolio
                  Manager of Ardsley Partners Institutional Fund, L.P. In addition,
                  an
                  aggregate of 297,574 shares underlying warrants and an aggregate
                  of
                  595,148 shares of common stock are held by Ardsley Offshore Fund,
                  Ltd.,
                  Ardsley Partners Fund II, L.P. and Marion Lynton, which shares
                  are also
                  offered under this prospectus, the power to vote or dispose of
                  which is
                  also held by Mr. Hempleman. 
               | 
            
| 
                 (14) 
               | 
              
                 Includes
                  75,020 shares underlying warrants. Pursuant to an investment management
                  agreement, RG Capital Management, L.P. serves as the investment
                  manager of
                  Radcliffe SPC, Ltd.’s Class A Convertible Crossover Segregated Portfolio.
                  RGC Management Company, LLC is the general partner of RG Capital
                  Management, L.P. Steve Katznelson and Gerald Stahlecker serve as
                  the
                  managing members of RGC Management Company, LLC. Each of RG Capital
                  Management, L.P., RGC Management Company, LLC and Messrs. Katznelson
                  and
                  Stahlecker disclaims beneficial ownership of the
                  shares. 
               | 
            
| 
                 (15) 
               | 
              
                 Includes
                  75,000 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Michael A. Roth and Brian J. Stark, both of whom disclaim
                  beneficial ownership of the shares. In addition, an aggregate of
                  75,000
                  shares underlying warrants and 150,000 shares of common stock are
                  held by
                  SF Capital Partners Ltd. and Stark Trading, which shares are also
                  offered
                  under this prospectus, the power to vote or dispose of which is
                  also held
                  by Michael A. Roth and Brian J. Stark, both of whom disclaim beneficial
                  ownership of the shares. 
               | 
            
| 
                 (16) 
               | 
              
                 Includes
                  56,862 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Mitch Levine as Managing Member of Enable Capital Management,
                  LLC as Manager of Enable Growth Partners LP. In addition, an aggregate
                  of
                  18,954 shares underlying warrants and an aggregate of 37,907 shares
                  of
                  common stock are held by Enable Opportunity Partners LP and Pierce
                  Diversified Strategy Master Fund LLC, Ena,
                  which shares are also offered under this prospectus, the power
                  to vote or
                  dispose of which is also held by Mr. Levine. Enable Capital, LLC,
                  an
                  affiliate of Enable Growth Partners LP, has been one of our financial
                  advisors since August 2004, during which period it offered informal
                  advice
                  on various financial and capital raising matters. In connection
                  with our
                  engagement of Cowen and Company, LLC to act as our exclusive placement
                  agent in the private offering, the shares resulting from which
                  are offered
                  for resale hereunder, Cowen and Company, LLC agreed, at our request,
                  to
                  engage Enable Capital, LLC as an advisor in connection with the
                  private
                  offering and pay Enable Capital, LLC 15% of the placement agent
                  fees
                  earned by Cowen and Company, LLC in connection with the private
                  offering.
                  Cowen and Company, LLC paid Enable Capital, LLC approximately $1.1
                  million
                  in June 2006 in satisfaction of this obligation. 
               | 
            
| 
                 (17) 
               | 
              
                 Includes
                  55,000 shares underlying warrants. Telluride Capital Master Fund
                  Ltd. is a
                  private investment fund that is owned by all of its investors and
                  is
                  managed by Telluride Asset Management LLC. Telluride Asset Management
                  LLC,
                  whose sole member is Peter Hajas, has voting and investment control
                  over
                  the shares. Peter Hajas and Telluride Asset Management LLC disclaim
                  beneficial ownership of the shares. 
               | 
            
| 
                 (18) 
               | 
              
                 Includes
                  55,000 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Bruce Bernstein as Managing Member of Rockmore Investment
                  Master Fund Ltd. 
               | 
            
| 
                 (19) 
               | 
              
                 Includes
                  50,000 shares underlying warrants. Ramius Capital Group, LLC is
                  the
                  investment advisor of Portside Growth and Opportunity Fund and
                  consequently has voting control and investment discretion over
                  the shares.
                  Ramius Capital Group, LLC disclaims beneficial ownership of the
                  shares.
                  Peter A. Cohen, Morgan B. Stark, Thomas W. Strauss and Jeffrey
                  M. Solomon
                  are the sole managing members of C4S & Co., LLC, the sole managing
                  member of Ramius Capital Group, LLC. As a result, Messrs. Cohen,
                  Stark,
                  Strauss and Solomon may be considered beneficial owners of any
                  shares
                  deemed to be beneficially owned by Ramius Capital Group, LLC. Messrs.
                  Cohen, Stark, Strauss and Solomon disclaim beneficial ownership
                  of the
                  shares. 
               | 
            
| 
                 (20) 
               | 
              
                 Includes
                  50,000 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Michael A. Roth and Brian J. Stark, both of whom disclaim
                  beneficial ownership of the shares. In addition, an aggregate of
                  100,000
                  shares underlying warrants and 200,000 shares of common stock are
                  held by
                  Shepherd Investments International Ltd. and Stark Trading, which
                  shares
                  are also offered under this prospectus, the power to vote or dispose
                  of
                  which is also held by Michael A. Roth and Brian J. Stark, both
                  of whom
                  disclaim beneficial ownership of the
                  shares. 
               | 
            
| 
                 (21) 
               | 
              
                 Includes
                  50,000 shares underlying warrants. The general partner of JMG Capital
                  Partners, L.P. is JMG Capital Management, LLC. The equity interests
                  of JMG
                  Capital Management, LLC are owned by JMG Capital Management, Inc.
                  and
                  Asset Alliance Holding Corp. Jonathan M. Glaser is the Executive
                  Officer
                  and Director of JMG Capital Management, Inc. and holds the power
                  to voting
                  and dispose of the shares. In addition, 50,000 shares underlying
                  warrants
                  and 100,000 shares of common stock are held by JMG Triton Offshore
                  Fund,
                  Ltd., which shares are also offered under this prospectus, the
                  power to
                  vote or dispose of which is shared by Mr. Glaser and Roger
                  Richter. 
               | 
            
| 
                 (22) 
               | 
              
                 Includes
                  50,000 shares underlying warrants. The investment manager of JMG
                  Triton
                  Offshore Fund, Ltd. is Pacific Assets Management LLC. The equity
                  interests
                  of Pacific Assets Management LLC are owned by Pacific Capital Management,
                  Inc. and Asset Alliance Holding Corp. The equity interests of Pacific
                  Capital Management, Inc. are owned by Roger Richter, Jonathan M.
                  Glaser
                  and Daniel A. David. Messrs. Glaser and Richter share the power
                  to vote or
                  dispose of the shares. In addition, 50,000 shares underlying warrants
                  and
                  100,000 shares of common stock are held by JMG Capital Partners,
                  LP, which
                  shares are also offered under this prospectus, the power to vote
                  or
                  dispose of which is held by Mr. Glaser. 
               | 
            
| 
                 (23) 
               | 
              
                 Includes
                  37,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Jeffrey F. Putnam as Executive Director of UBS O’Connor LLC,
                  the Investment Manager of O’Connor PIPES Corporate Strategies Master
                  Limited. 
               | 
            
| 
                 (24) 
               | 
              
                 Includes
                  37,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Keith Goodman as Manager of Nite Capital LLC, as General
                  Partner of Nite Capital LP. 
               | 
            
| 
                 (25) 
               | 
              
                 Includes
                  37,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Steve Derby as Sole Managing Member of SDS Management,
                  LLC, the
                  Investment Manager of SDS Capital Group SPC, Ltd. Mr. Derby is
                  also a
                  Director of SDS Capital Group SPC, Ltd. Each of Mr. Derby and SDS
                  Management, LLC disclaims beneficial ownership of the
                  shares. 
               | 
            
| 
                 (26) 
               | 
              
                 Includes
                  36,667 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by E. B. Lyon, IV as Authorized Agent of Gryphon Master Fund,
                  L.P. 
               | 
            
| 
                 (27) 
               | 
              
                 Includes
                  27,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Allan Teh as Managing Member of Kamunting Street Management,
                  LLC, the General Partner of Kamunting Street Capital Management,
                  L.P., the
                  Investment Manager of Kamunting Street Master Fund,
                  Ltd. 
               | 
            
| 
                 (28) 
               | 
              
                 Includes
                  27,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by D. Blair Baker as President and CEO of Precept Management,
                  LLC
                  as General Partner of Precept Capital Management, LP as agent and
                  attorney-in-fact of Precept Capital Master Fund, G.P. 
               | 
            
| 
                 (29) 
               | 
              
                 Includes
                  25,000 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is shared by Michael A. Roth and Brian J. Stark, both of whom disclaim
                  beneficial ownership of the shares. In addition, an aggregate of
                  125,000
                  shares underlying warrants and 250,000 shares of common stock are
                  held by
                  Shepherd Investments International Ltd. and SF Capital Partners
                  Ltd.,
                  which shares are also offered under this prospectus, the power
                  to vote or
                  dispose of which is also held by Michael A. Roth and Brian J. Stark,
                  both
                  of whom disclaim beneficial ownership of the shares. 
               | 
            
| 
                 (30) 
               | 
              
                 Includes
                  22,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Richard Smithline as Director of CAMOFI Master
                  LDC. 
               | 
            
| 
                 (31) 
               | 
              
                 Includes
                  18,954 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is shared by James P. Andrew and Stephen J. Carter as Co-Chief
                  Executive
                  Officers of Andrew Carter Capital, Inc. as General Partner of ACCF
                  GenPar,
                  L.P. as General Partner of Cordillera Fund, L.P. 
               | 
            
| 
                 (32) 
               | 
              
                 Includes
                  18,334 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Tom C. Davis as Authorized Agent of GSSF Master Fund,
                  LP. 
               | 
            
| 
                 (33) 
               | 
              
                 Includes
                  12,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by George Locasto as Managing Director of UBS
                  O’Connor LLC, the Investment Manager of UBS Global Equity Arbitrage
                  Master
                  Limited. 
               | 
            
| 
                 (34) 
               | 
              
                 Includes
                  11,500 shares underlying warrantsPower to vote or dispose of the
                  shares is
                  held by Laura Granger, as Managing Director and Portfolio Manager
                  of
                  Credit Suisse Asset Management, LLC, as Investment Advisor of Credit
                  Suisse Global Small Cap Fund, Inc.
                  In addition, an aggregate of 111,699 shares underlying warrants
                  and an
                  aggregate of 223,398 shares of common stock are held by Credit
                  Suisse
                  Trust-Small Cap Growth Portfolio, Credit
                  Suisse Trust-Global Small Cap Portfolio and
                  Credit
                  Suisse Small Cap Growth Fund, Inc.,
                  which shares are also offered under this prospectus, the power
                  to vote or
                  dispose of which is also held by Ms.
                  Granger. 
               | 
            
| 
                 (35) 
               | 
              
                 Includes
                  11,500 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Laura Granger, as Managing Director and Portfolio Manager
                  of
                  Credit Suisse Asset Management, LLC, as Investment Advisor of Credit
                  Suisse Trust-Global Small Cap Portfolio. In
                  addition, an aggregate of 111,699 shares underlying warrants and
                  an
                  aggregate of 223,398 shares of common stock are held by Credit
                  Suisse
                  Trust-Small Cap Growth Portfolio, Credit
                  Suisse Global Small Cap Fund, Inc. and
                  Credit
                  Suisse Small Cap Growth Fund, Inc.,
                  which shares are also offered under this prospectus, the power
                  to vote or
                  dispose of which is also held by Ms. Granger. 
               | 
            
| 
                 (36) 
               | 
              
                 Includes
                  11,372 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Mitch Levine as Managing Member of Enable Capital Management,
                  LLC as Manager of Enable Opportunity Partners LP. In addition,
                  an
                  aggregate of 64,444 shares underlying warrants and an aggregate
                  of 128,886
                  shares of common stock are held by Enable Growth Partners LP and
                  Pierce
                  Diversified Strategy Master Fund LLC, Ena,
                  which shares are also offered under this prospectus, the power
                  to vote or
                  dispose of which is also held by Mr. Levine. Enable Capital, LLC,
                  an
                  affiliate of Enable Opportunity Partners LP, has been one of our
                  financial
                  advisors since August 2004, during which period it offered informal
                  advice
                  on various financial and capital raising matters. In connection
                  with our
                  engagement of Cowen and Company, LLC to act as our exclusive placement
                  agent in the private offering, the shares resulting from which
                  are offered
                  for resale hereunder, Cowen and Company, LLC agreed, at our request,
                  to
                  engage Enable Capital, LLC as an advisor in connection with the
                  private
                  offering and pay Enable Capital, LLC 15% of the placement agent
                  fees
                  earned by Cowen and Company, LLC in connection with the private
                  offering.
                  Cowen and Company, LLC paid Enable Capital, LLC approximately $1.1
                  million
                  in June 2006 in satisfaction of this obligation. 
               | 
            
| 
                 (37) 
               | 
              
                 Includes
                  10,050 shares underlying warrants. Power to vote or dispose of
                  the shares
                  is held by Sanford B. Prater as Managing Member of Ridgecrest Capital,
                  LLC, the General Partner of Ridgecrest Partners QP, L.P. In addition,
                  an
                  aggregate of 9,950 shares underlying warrants and an aggregate
                  of 19,900
                  shares of common stock are held by Advantage Advisors Catalyst
                  Partners
                  L.P., Advantage
                  Advisors Catalyst International Ltd.,
                  Ridgecrest Partners Ltd. and Ridgecrest Partners L.P., which shares
                  are
                  also offered under this prospectus, the power to vote or dispose
                  of which
                  is also held by Mr. Prater. 
               | 
            
| 
                 (38) 
               | 
              
                 Includes
                  9,477 shares underlying warrants. Power to vote or dispose of the
                  shares
                  is held by John F. DeSantis as President of Civic Capital Fund
                  I,
                  LLC. 
               | 
            
| 
                 (39) 
               | 
              
                 Includes
                  7,582 shares underlying warrants. Power to vote or dispose of the
                  shares
                  is held by Mitch Levine as Managing Member of Enable Capital Management,
                  LLC as Manager of Pierce
                  Diversified Strategy Master Fund LLC, Ena. In
                  addition, an aggregate of 68,234 shares underlying warrants and
                  an
                  aggregate of 136,467 shares of common stock are held by Enable
                  Growth
                  Partners LP and Enable Opportunity Partners LP, which shares are
                  also
                  offered under this prospectus, the power to vote or dispose of
                  which is
                  also held by Mr. Levine. Enable Capital, LLC, an affiliate of Pierce
                  Diversified Strategy Master Fund LLC, Ena,
                  has been one of our financial advisors since August 2004, during
                  which
                  period it offered informal advice on various financial and capital
                  raising
                  matters. In connection with our engagement of Cowen and Company,
                  LLC to
                  act as our exclusive placement agent in the private offering, the
                  shares
                  resulting from which are offered for resale hereunder, Cowen and
                  Company,
                  LLC agreed, at our request, to engage Enable Capital, LLC as an
                  advisor in
                  connection with the private offering and pay Enable Capital, LLC
                  15% of
                  the placement agent fees earned by Cowen and Company, LLC in connection
                  with the private offering. Cowen and Company, LLC paid Enable Capital,
                  LLC
                  approximately $1.1 million in June 2006 in satisfaction of this
                  obligation. 
               | 
            
| 
                 (40) 
               | 
              
                 Includes
                  3,791 shares underlying warrants. Power to vote or dispose of the
                  shares
                  is held by Philip J. Hempleman as Investment Advisor to Marion
                  Lynton.
                  In
                  addition, an aggregate of 375,284 shares underlying warrants and
                  an
                  aggregate of 750,568 shares of common stock are held by Ardsley
                  Offshore
                  Fund, Ltd., Ardsley Partners Fund II, L.P. and Ardsley Partners
                  Institutional Fund, L.P., which shares are also offered under this
                  prospectus, the power to vote or dispose of which is also held
                  by Mr.
                  Hempleman. 
               | 
            
| 
                 (41) 
               | 
              
                 Includes
                  3,500 shares underlying warrants. Power to vote or dispose of the
                  shares
                  is held by Sanford B. Prater as Portfolio Manager of Advantage
                  Advisors
                  Catalyst Partners L.P. In addition, an aggregate of 16,500 shares
                  underlying warrants and an aggregate of 33,000 shares of common
                  stock are
                  held by Ridgecrest Partners QP, L.P., Ridgecrest Partners Ltd.,
                  Advantage
                  Advisors Catalyst International Ltd.
                  and Ridgecrest Partners L.P., which shares are also offered under
                  this
                  prospectus, the power to vote or dispose of which is also held
                  by Mr.
                  Prater. 
               | 
            
| 
                 (42) 
               | 
              
                 Includes
                  3,400 shares underlying warrants. Power to vote or dispose of the
                  shares
                  is held by Sanford B. Prater as Portfolio Manager of Advantage
                  Advisors Catalyst International Ltd. In
                  addition, an aggregate of 16,600 shares underlying warrants and
                  an
                  aggregate of 33,200 shares of common stock are held by Ridgecrest
                  Partners
                  QP, L.P., Advantage Advisors Catalyst Partners L.P., Ridgecrest
                  Partners Ltd.
                  and Ridgecrest Partners L.P., which shares are also offered under
                  this
                  prospectus, the power to vote or dispose of which is also held
                  by Mr.
                  Prater. 
               | 
            
| 
                 (43) 
               | 
              
                 Includes
                  2,550 shares underlying warrants. Power to vote or dispose of the
                  shares
                  is held by Sanford B. Prater as Managing Member of Ridgecrest Investment
                  Management LLC, the Investment Manager of Ridgecrest
                  Partners Ltd. In
                  addition, an aggregate of 17,450 shares underlying warrants and
                  an
                  aggregate of 34,900 shares of common stock are held by Ridgecrest
                  Partners
                  QP, L.P., Advantage Advisors Catalyst Partners L.P., Advantage
                  Advisors Catalyst International Ltd. and
                  Ridgecrest Partners L.P., which shares are also offered under this
                  prospectus, the power to vote or dispose of which is also held
                  by Mr.
                  Prater. 
               | 
            
| 
                 (44) 
               | 
              
                 Includes
                  2,000 shares underlying warrants. Power to vote or dispose of the
                  shares
                  is held by Laura Granger, as Managing Director and Portfolio Manager
                  of
                  Credit Suisse Asset Management, LLC, as Investment Advisor of Credit
                  Suisse Small Cap Growth Fund, Inc. In
                  addition, an aggregate of 121,199 shares underlying warrants and
                  an
                  aggregate of 242,398 shares of common stock are held by Credit
                  Suisse
                  Trust-Small Cap Growth Portfolio, Credit
                  Suisse Global Small Cap Fund, Inc.
                  and Credit
                  Suisse Trust-Global Small Cap Portfolio,
                  which shares are also offered under this prospectus, the power
                  to vote or
                  dispose of which is also held by Ms. Granger. 
               | 
            
| 
                 (45) 
               | 
              
                 Includes
                  500 shares underlying warrants. Power to vote or dispose of the
                  shares is
                  held by Sanford B. Prater as Managing Member of Ridgecrest Capital,
                  LLC,
                  the General Partner of Ridgecrest Partners L.P. In addition, an
                  aggregate
                  of 19,500 shares underlying warrants and an aggregate of 39,000
                  shares of
                  common stock are held by Ridgecrest Partners QP, L.P., Advantage
                  Advisors
                  Catalyst Partners L.P., Advantage
                  Advisors Catalyst International Ltd. and Ridgecrest
                  Partners Ltd., which shares are also offered under this prospectus,
                  the
                  power to vote or dispose of which is also held by Mr.
                  Prater. 
               | 
            
| 
                 · 
               | 
              
                 ordinary
                  brokerage transactions and transactions in which the broker-dealer
                  solicits purchasers; 
               | 
            
| 
                 · 
               | 
              
                 block
                  trades in which the broker-dealer will attempt to sell the shares
                  as agent
                  but may position and resell a portion of the block as principal
                  to
                  facilitate the transaction; 
               | 
            
| 
                 · 
               | 
              
                 purchases
                  by a broker-dealer as principal and resale by the broker-dealer
                  for its
                  account; 
               | 
            
| 
                 · 
               | 
              
                 an
                  exchange distribution in accordance with the rules of the applicable
                  exchange; 
               | 
            
| 
                 · 
               | 
              
                 privately
                  negotiated transactions; 
               | 
            
| 
                 · 
               | 
              
                 short
                  sales; 
               | 
            
| 
                 · 
               | 
              
                 broker-dealers
                  may agree with the selling security holders to sell a specified
                  number of
                  such shares at a stipulated price per share; 
               | 
            
| 
                 · 
               | 
              
                 a
                  combination of any such methods of sale; and 
               | 
            
| 
                 · 
               | 
              
                 any
                  other method permitted pursuant to applicable
                  law. 
               | 
            
| 
                 · 
               | 
              
                 Our
                  current report on Form 8-K for June 26, 2006, as filed with the
                  Commission
                  on June 27, 2006 (File No. 0-21467); 
               | 
            
| 
                 · 
               | 
              
                 Our
                  current report on Form 8-K for June 20, 2006, as filed with the
                  Commission
                  on June 21, 2006; 
               | 
            
| 
                 · 
               | 
              
                 Our
                  current report on Form 8-K for May 25, 2006, as filed with the
                  Commission
                  on May 31, 2006; 
               | 
            
| 
                 · 
               | 
              
                 Our
                  quarterly report on Form 10-Q for the three months ended March
                  31, 2006,
                  as filed with the Commission on May 15, 2006; 
               | 
            
| 
                 · 
               | 
              
                 Our
                  current report on Form 8-K for April 19, 2006, as filed with the
                  Commission on April 24, 2006; 
               | 
            
| 
                 · 
               | 
              
                 Our
                  annual report on Form 10-KSB for the year ended December 31, 2005,
                  as
                  filed with the Commission on April 14, 2006; 
               | 
            
| 
                 · 
               | 
              
                 Our
                  current report on Form 8-K for April 13, 2006, as filed with the
                  Commission on April 19, 2006; 
               | 
            
| 
                 · 
               | 
              
                 Our
                  current report on Form 8-K for January 26, 2006, as filed with
                  the
                  Commission on February 1, 2006; and 
               | 
            
| 
                 · 
               | 
              
                 The
                  description of our capital stock contained in Amendment No. 3 to
                  Registration Statement on Form S-1 (Reg. No. 333-127714), as filed
                  with
                  the Commission on November 30, 2005, including any amendments or
                  reports
                  filed for the purpose of updating such
                  description. 
               |