COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
 
EXHIBIT 12.1
 
Ratio of Earnings To Fixed Charges
 
       Six Months
Ended June 30,
2001

     Year Ended December 31,
       2000
     1999
     1998
     1997
     1996
       (amounts in thousands)
Net loss      $(402,490 )      $(1,411,273 )      $(719,968 )      $(124,546 )      $(31,020 )      $(6,246 )
Equity in losses of equity-method
     investees
     23,490        304,596        76,769        2,905        —          —    
     
     
     
     
     
     
  
Net loss before equity in losses of
     equity-method investees
     (379,000 )      (1,106,677 )      (643,199 )      (121,641 )      (31,020 )      (6,246 )
     
     
     
     
     
     
  
Plus fixed charges:
          Interest expense including
               amortization of debt
               issuance costs
     68,896        130,921        84,566        26,639        326        5  
          Assumed interest element
               included in rent expense
     5,339        10,773        4,732        2,833        700        90  
     
     
     
     
     
     
  
       74,235        141,694        89,298        29,472        1,026        95  
     
     
     
     
     
     
  
      
          Adjusted earnings (loss)      (304,765 )      (964,983 )      (553,901 )      (92,169 )      (29,994 )      (6,151 )
          Fixed charges      (74,235 )      (141,694 )      (89,298 )      (29,472 )      (1,026 )      (95 )
     
     
     
     
     
     
  
Deficiency in earnings to cover
     fixed charges
     $(379,000 )      $(1,106,677 )      $(643,199 )      $(121,641 )      $(31,020 )      $(6,246 )