Exhibit 12.1



COMPUTATION OF

RATIO OF EARNINGS TO FIXED CHARGES



|                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |          |   |      |   |        |  |   |       
|---------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------- | ------- | - | ---- | - | ------- | ---- |  | - | -------- | - | ---- | - | ------ |  | - | ------
|                                                                                                                                                                 |  | Year Ended December 31,
|(amounts in thousands)                                                                                                                                           |  | 2003                    |         |   | 2002 |   |         | 2001 |  |   | 2000     |   | 1999
|(Loss) income before income taxes, extraordinary loss and cumulative effect of a change in accounting principle                                                  |  | $                       | (37,446 | ) |      | $ | (95,890 | )    |  | $ | (105,062 | ) |      | $ | 62,353 |  | $ | 22,522
|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 a change in
accounting principle |  |                         | (35,513 | ) |      |   | (92,485 | )    |  |   | (103,100 | ) |      |   | 62,738 |  |   | 22,522
|                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |          |   |      |   |        |  |   |       
|Plus fixed charges:                                                                                                                                              |  |                         |         |   |      |   |         |      |  |   |          |   |      |   |        |  |   |       
|Interest expense                                                                                                                                                 |  |                         | 6,945   |   |      |   | 7,254   |      |  |   | 17,966   |   |      |   | 6,384  |  |   | 35    
|Amortization of costs related to indebtedness                                                                                                                    |  |                         | 1,171   |   |      |   | 1,095   |      |  |   | 2,647    |   |      |   | 1,088  |  |   |      
|Estimated interest factor in rent expense (1)                                                                                                                    |  |                         | 443     |   |      |   | 576     |      |  |   | 734      |   |      |   | 428    |  |   | 345   
|                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |          |   |      |   |        |  |   |       
|Total Fixed Charges                                                                                                                                              |  |                         | 8,559   |   |      |   | 8,925   |      |  |   | 21,347   |   |      |   | 7,900  |  |   | 380   
|                                                                                                                                                                 |  |                         |         |   |      |   |         |      |  |   |          |   |      |   |        |  |   |       
|Adjusted (loss) income                                                                                                                                           |  |                         | (26,954 | ) |      |   | (83,560 | )    |  |   | (81,753  | ) |      |   | 70,638 |  |   | 22,902
|Fixed charges                                                                                                                                                    |  |                         | 8,559   |   |      |   | 8,925   |      |  |   | 21,347   |   |      |   | 7,900  |  |   | 380   
|Deficiency in earnings to cover fixed charges                                                                                                                    |  | $                       | (35,513 | ) |      | $ | (92,485 | )    |  | $ | (103,100 | ) |      | $ |       |  | $ |      
|Ratio of earnings to fixed charges                                                                                                                               |  |                         | *       |   |      |   | *       |      |  |   | *        |   |      |   | 8.9    |  |   | 60.3  

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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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