EXHIBIT 12.1



COMPUTATON OF

RATIO OF EARNINGS TO FIXED CHARGES

(amounts in thousands)



|                                                        |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  
|------------------------------------------------------- |  | ------------------------------ | ------- | - | ---- | - | ------ | ---- |  | - | ------- | - |  | ---- | ------- | - |  | - | ------- | -
|                                                        |  | Fiscal Year Ended December 31, |        
|                                                        |  | 2004                           |         |   | 2003 |   |        | 2002 |  |   | 2001    |   |  | 2000 |        
|Net loss from continuing operations before income taxes |  | $                              | (17,873 | ) |      | $ | (9,393 | )    |  | $ | (12,156 | ) |  | $    | (12,912 | ) |  | $ | (12,379 | )
|Add:                                                    |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  
|Fixed charges                                           |  |                                | 192     |   |      |   | 279    |      |  |   | 360     |   |  |      | 445     |   |  |   | 774     |  
|                                                        |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  
|Earnings as adjusted                                    |  | $                              | (17,681 | ) |      | $ | (9,114 | )    |  | $ | (11,796 | ) |  | $    | (12,467 | ) |  | $ | (11,605 | )
|                                                        |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  
|                                                        |  |                                |         |   |     
|Fixed charges                                           |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  
|Interest                                                |  | $                              | 2       |   |      | $ | 65     |      |  | $ | 157     |   |  | $    | 244     |   |  | $ | 605     |  
|Portion of rent representative of the interest factor   |  |                                | 190     |   |      |   | 214    |      |  |   | 203     |   |  |      | 201     |   |  |   | 169     |  
|                                                        |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  
|Total fixed charges                                     |  |                                | 192     |   |      |   | 279    |      |  |   | 360     |   |  |      | 445     |   |  |   | 774     |  
|                                                        |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  
|Deficiency of earnings to cover fixed charges           |  | $                              | 17,873  |   |      | $ | 9,393  |      |  | $ | 12,156  |   |  | $    | 12,912  |   |  | $ | 12,379  |  
|                                                        |  |                                |         |   |      |   |        |      |  |   |         |   |  |      |         |   |  |   |         |  



For purposes of
computing the ratio of fixed charges, earnings consist of loss before provision for income taxes plus fixed charges. Fixed charges consist of interest charges and that portion of rental expense we believe to be representative of interest.