Exhibit 12.1



COMPUTATION OF

RATIO OF EARNINGS TO FIXED CHARGES



|                                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |          |   |  |   |       
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------- | ------- | - | ---- | - | ------- | ---- |  | - | ------- | - |  | ---- | -------- | - |  | - | ------
|                                                                                                                                                                                 |  | Year Ended December 31,
|(amounts in thousands)                                                                                                                                                           |  | 2004                    |         |   | 2003 |   |         | 2002 |  |   | 2001    |   |  | 2000
|(Loss) income before income taxes, extraordinary loss and cumulative effect of adoption of and changes in accounting
principles                                                  |  | $                       | (44,158 | ) |      | $ | (37,446 | )    |  | $ | (95,890 | ) |  | $    | (105,062 | ) |  | $ | 62,353
|Equity in net losses of equity method investees                                                                                                                                  |  |                         |        |   |      |   | 1,933   |      |  |   | 3,405   |   |  |      | 1,962    |   |  |   | 385   
|                                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |          |   |  |   |       
|(Loss) income before equity in net losses of equity method investees, income taxes, extraordinary loss and cumulative effect of adoption of
and changes in accounting principles |  |                         | (44,158 | ) |      |   | (35,513 | )    |  |   | (92,485 | ) |  |      | (103,100 | ) |  |   | 62,738
|                                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |          |   |  |   |       
|Plus fixed charges:                                                                                                                                                              |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |          |   |  |   |       
|Interest expense                                                                                                                                                                 |  |                         | 6,103   |   |      |   | 6,945   |      |  |   | 7,254   |   |  |      | 17,966   |   |  |   | 6,384 
|Amortization of costs related to indebtedness                                                                                                                                    |  |                         | 6,792   |   |      |   | 1,171   |      |  |   | 1,095   |   |  |      | 2,647    |   |  |   | 1,088 
|Estimated interest factor in rent expense(1)                                                                                                                                     |  |                         | 455     |   |      |   | 443     |      |  |   | 576     |   |  |      | 734      |   |  |   | 428   
|                                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |          |   |  |   |       
|Total Fixed Charges                                                                                                                                                              |  |                         | 13,350  |   |      |   | 8,559   |      |  |   | 8,925   |   |  |      | 21,347   |   |  |   | 7,900 
|                                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |         |   |  |      |          |   |  |   |       
|Adjusted (loss) income                                                                                                                                                           |  |                         | (30,808 | ) |      |   | (26,954 | )    |  |   | (83,560 | ) |  |      | (81,753  | ) |  |   | 70,638
|Fixed charges                                                                                                                                                                    |  |                         | 13,350  |   |      |   | 8,559   |      |  |   | 8,925   |   |  |      | 21,347   |   |  |   | 7,900 
|Deficiency in earnings to cover fixed charges                                                                                                                                    |  | $                       | (44,158 | ) |      | $ | (35,513 | )    |  | $ | (92,485 | ) |  | $    | (103,100 | ) |  | $ |      
|Ratio of earnings to fixed charges                                                                                                                                               |  |                         | *       |   |      |   | *       |      |  |   | *       |   |  |      | *        |   |  |   | 8.9   

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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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