Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

For the Three-Months ended March 31, 2008
and for the Year ended December 31, 2007, the

Periods from May 24, 2006 to December 31, 2006 and

January 1, 2006 to May 23, 2006 and the Years ended December 31, 2005, 2004 and 2003



|                                                                                    |  |                                |      |   |                            |   |             |                          |  |   |      |   |                        |  |                            |   |     |                           |   |     |                           |  |   |     |   |  |   |     |  
|----------------------------------------------------------------------------------- |  | ------------------------------ | ---- | - | -------------------------- | - | ----------- | ------------------------ |  | - | ---- | - | ---------------------- |  | -------------------------- | - | --- | ------------------------- | - | --- | ------------------------- |  | - | --- | - |  | - | --- | -
|                                                                                    |  | Successor                      |      |   |                            |   | Predecessor |                         
|                                                                                    |  | Three-MonthsendedMarch 31,2008 |      |   | Year endedDecember 31,2007 |   |             | May 24 -December 31,2006 |  |   |      |   | January 1 -May 23,2006 |  | Year endedDecember 31,2005 |   |     | YearendedDecember 31,2004 |   |     | YearendedDecember 31,2003 | 
|(IN MILLIONS)                                                                       |  |                                |      |   |                            |   |             |                          |  |   |      |   |                        |  |                            |   |     |                           |   |     |                           |  |   |     |   |  |   |     |  
|Fixed charges                                                                       |  |                                |      |   |                            |   |             |                          |  |   |      |   |                        |  |                            |   |     |                           |   |     |                           |  |   |     |   |  |   |     |  
|Interest expense                                                                    |  | $                              | 162  |   |                            | $ | 650         |                          |  | $ | 386  |   |                        |  |                            | $ | 49  |                           | $ | 133 |                           |  | $ | 192 |   |  | $ | 171 |  
|Interest capitalized                                                                |  |                                |     |   |                            |   | 1           |                          |  |   |     |   |                        |  |                            |   |    |                           |   | 1   |                           |  |   | 4   |   |  |   | 5   |  
|Appropriate portion of rental expense representative of the interest factor         |  |                                | 9    |   |                            |   | 37          |                          |  |   | 27   |   |                        |  |                            |   | 17  |                           |   | 47  |                           |  |   | 51  |   |  |   | 46  |  
|                                                                                    |  |                                |      |   |                            |   |             |                          |  |   |      |   |                        |  |                            |   |     |                           |   |     |                           |  |   |     |   |  |   |     |  
|Total fixed charges                                                                 |  | $                              | 171  |   |                            | $ | 688         |                          |  | $ | 413  |   |                        |  |                            | $ | 66  |                           | $ | 181 |                           |  | $ | 247 |   |  | $ | 222 |  
|Earnings                                                                            |  |                                |      |   |                            |   |             |                          |  |   |      |   |                        |  |                            |   |     |                           |   |     |                           |  |   |     |   |  |   |     |  
|(Loss)/income from continuing operations before income taxes and minority interests |  | $                              | (113 | ) |                            | $ | (264        | )                        |  | $ | (384 | ) |                        |  |                            | $ | 25  |                           | $ | 203 |                           |  | $ | 318 |   |  | $ | 530 |  
|Fixed charges per above                                                             |  |                                | 171  |   |                            |   | 688         |                          |  |   | 413  |   |                        |  |                            |   | 66  |                           |   | 181 |                           |  |   | 247 |   |  |   | 222 |  
|Amortization of capitalized interest                                                |  |                                |     |   |                            |   | 1           |                          |  |   | 1    |   |                        |  |                            |   | 1   |                           |   | 1   |                           |  |   |    |   |  |   |    |  
|Equity in net income of affiliates, net of dividends received                       |  |                                | 10   |   |                            |   | 6           |                          |  |   | (2   | ) |                        |  |                            |   | 2   |                           |   | 2   |                           |  |   | 3   |   |  |   | 4   |  
|Minority interest in net loss of consolidated subsidiaries                          |  |                                |     |   |                            |   |            |                          |  |   |     |   |                        |  |                            |   |    |                           |   |    |                           |  |   | 5   |   |  |   | 6   |  
|Interest capitalized                                                                |  |                                |     |   |                            |   | (1          | )                        |  |   |     |   |                        |  |                            |   |    |                           |   | (1  | )                         |  |   | (4  | ) |  |   | (5  | )
|                                                                                    |  |                                |      |   |                            |   |             |                          |  |   |      |   |                        |  |                            |   |     |                           |   |     |                           |  |   |     |   |  |   |     |  
|Total earnings                                                                      |  | $                              | 68   |   |                            | $ | 430         |                          |  | $ | 28   |   |                        |  |                            | $ | 94  |                           | $ | 386 |                           |  | $ | 569 |   |  | $ | 757 |  
|                                                                                    |  |                                |      |   |                            |   |             |                          |  |   |      |   |                        |  |                            |   |     |                           |   |     |                           |  |   |     |   |  |   |     |  
|Ratio of earnings to fixed charges                                                  |  |                                | (a   | ) |                            |   | (a          | )                        |  |   | (a   | ) |                        |  |                            |   | 1.4 |                           |   | 2.1 |                           |  |   | 2.3 |   |  |   | 3.4 |  



|(a) | Earnings for the three months ended March 31, 2008, the year ended December 31, 2007 and for the successor period of May 24, 2006 to December 31, 2006 were
inadequate to cover fixed charges by $103 million, $258 million and $385 million, respectively.
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