Exhibit 12.2 Ration of Combined Charges and Preference Dividends to Earnings (dollars in thousands) Three Three March 5, 1996 Year Months Months (inception) to Ended Ended Ended December 31, December 31, March 31, March 31, 1996 1997 1998 1998 1999 ---- ---- ---- ---- ---- Fixed charges and Preference Dividends: Interest expense on indebtedness (including amortization of debt expense and discount) 879 5,859 66,880 11,929 19,761 Interest expense on portion of rent expense representative of interest 127 756 904 458 1,813 Preference Dividends - - - - - -------- -------- -------- -------- -------- Total Fixed Charges and Preference Dividends 1,006 6,615 67,784 12,387 21,574 -------- -------- -------- -------- -------- Earnings (Loss): Net loss before provisions for income taxes (13,633) (138,054) (281,471) ( 38,558) (108,112) Fixed charges per above 1,006 6,615 67,784 12,387 21,574 -------- -------- -------- -------- ------- Total Earnings (Loss) (12,627) (131,439) (213,687) (26,171) (86,538) ======== ======== ======== ======== ======== Ratio of Earnings to Fixed Charge (0.08) (0.05) (0.32) (0.47) (0.25) ======== ======== ======== ======== ======== Coverage deficiency (13,633) (138,054) (281,471) (38,558) (108,112) ======== ======== ======== ======== ========