Exhibit 12.1



Computation of

Ratio of Earnings to Fixed Charges



|                                                                                                                                                                        |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |         |   |  |   |          |  
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------- | ------- | - | ---- | - | ------- | ---- |  | - | ------- | - |  | ---- | ------- | - |  | - | -------- | -
|                                                                                                                                                                        |  | Year Ended December 31, |        
|(amounts in thousands)                                                                                                                                                  |  | 2005                    |         |   | 2004 |   |         | 2003 |  |   | 2002    |   |  | 2001 |        
|Loss before income taxes, extraordinary loss and cumulative effect of adoption of and changes in accounting principles                                                  |  | $                       | (23,445 | ) |      | $ | (44,158 | )    |  | $ | (37,446 | ) |  | $    | (95,890 | ) |  | $ | (105,062 | )
|Equity in net losses of equity method investees                                                                                                                         |  |                         |        |   |      |   |        |      |  |   | 1,933   |   |  |      | 3,405   |   |  |   | 1,962    |  
|                                                                                                                                                                        |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |         |   |  |   |          |  
|Loss before equity in net losses of equity method investees, income taxes, extraordinary loss and cumulative effect of adoption of and changes
in accounting principles |  |                         | (23,445 | ) |      |   | (44,158 | )    |  |   | (35,513 | ) |  |      | (92,485 | ) |  |   | (103,100 | )
|                                                                                                                                                                        |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |         |   |  |   |          |  
|Plus fixed charges:                                                                                                                                                     |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |         |   |  |   |          |  
|Interest expense                                                                                                                                                        |  |                         | 4,623   |   |      |   | 6,103   |      |  |   | 6,945   |   |  |      | 7,254   |   |  |   | 17,966   |  
|Amortization of costs related to indebtedness                                                                                                                           |  |                         | 5,521   |   |      |   | 6,792   |      |  |   | 1,171   |   |  |      | 1,095   |   |  |   | 2,647    |  
|Estimated interest factor in rent expense (1)                                                                                                                           |  |                         | 391     |   |      |   | 455     |      |  |   | 443     |   |  |      | 576     |   |  |   | 734      |  
|                                                                                                                                                                        |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |         |   |  |   |          |  
|Total Fixed Charges                                                                                                                                                     |  |                         | 10,535  |   |      |   | 13,350  |      |  |   | 8,559   |   |  |      | 8,925   |   |  |   | 21,347   |  
|                                                                                                                                                                        |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |         |   |  |   |          |  
|Adjusted loss                                                                                                                                                           |  |                         | (12,910 | ) |      |   | (30,808 | )    |  |   | (26,954 | ) |  |      | (83,560 | ) |  |   | (81,753  | )
|Fixed charges                                                                                                                                                           |  |                         | 10,535  |   |      |   | 13,350  |      |  |   | 8,559   |   |  |      | 8,925   |   |  |   | 21,347   |  
|Deficiency in earnings to cover fixed charges                                                                                                                           |  | $                       | (23,445 | ) |      | $ | (44,158 | )    |  | $ | (35,513 | ) |  | $    | (92,485 | ) |  | $ | (103,100 | )
|                                                                                                                                                                        |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |         |   |  |   |          |  
|                                                                                                                                                                        |  |                         |         |   |     
|Ratio of earnings to fixed charges                                                                                                                                      |  |                         | *       |   |      |   | *       |      |  |   | *       |   |  |      | *       |   |  |   | *        |  

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|* | Calculation not meaningful as ratio is less then 1.
|- | ---------------------------------------------------

|(1) | The interest factor in rent expense is estimated as one-third of rental expense.
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