Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges



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|------------------------------------------------------------ |  | ------------------------ | ------ | ---- | - | ------ | ---- |  | ---- | ------ | ---- | - | ------ |  | - | -------- | ---
|                                                             |  | Years Ended December 31, |       
|(in thousands, except ratio of earnings to fixed charges)    |  | 2004                     |        | 2005 |   |        | 2006 |  | 2007 |        | 2008 |  
|Income (loss) from continuing operations before income taxes |  | $                        | 21,311 |      | $ | (4,469 | )    |  | $    | 41,531 |      | $ | 22,209 |  | $ | (133,076 | )  
|Fixed charges:                                               |  |                          |        |      |   |        |      |  |      |        |      |   |        |  |   |          |    
|Interest expense (including capitalized interest)            |  |                          | 5,632  |      |   | 5,010  |      |  |      | 5,028  |      |   | 5,012  |  |   | 1,537    |    
|Interest relating to rental expense(1)                       |  |                          | 2,584  |      |   | 4,079  |      |  |      | 5,790  |      |   | 6,339  |  |   | 5,314    |    
|                                                             |  |                          |        |      |   |        |      |  |      |        |      |   |        |  |   |          |    
|Total fixed charges                                          |  |                          | 8,216  |      |   | 9,089  |      |  |      | 10,818 |      |   | 11,351 |  |   | 6,851    |    
|                                                             |  |                          |        |      |   |        |      |  |      |        |      |   |        |  |   |          |    
|Earnings available for fixed charges                         |  | $                        | 29,527 |      | $ | 4,620  |      |  | $    | 52,349 |      | $ | 33,560 |  | $ | (126,225 | )  
|                                                             |  |                          |        |      |   |        |      |  |      |        |      |   |        |  |   |          |    
|Ratio of earnings to fixed charges                           |  |                          | 3.59   |      |   | N/A    | (2)  |  |      | 4.84   |      |   | 2.96   |  |   | N/A      | (3)
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|(1) | The representative interest portion of rental expense was deemed to be one-third of all rental expense, except for the
rental expense related to the off-balance sheet financing leases, as described in the footnotes to the financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2008 which was deemed to be all interest.
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|(2) | For the year ended December 31, 2005 our earnings were insufficient to cover fixed charges; the amount of additional
earnings needed to cover fixed charges for the year was $4.5 million.
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|(3) | For the year ended December 31, 2008 our earnings were insufficient to cover fixed charges; the amount of additional
earnings needed to cover fixed charges for the year was $133.1 million.
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