<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR YEAR YEAR <FISCAL-YEAR-END> DEC-31-1999 DEC-31-1998 DEC-31-1997 <PERIOD-START> JAN-01-1999 JAN-01-1998 JAN-01-1997 <PERIOD-END> DEC-31-1999 DEC-31-1998 DEC-31-1997 <CASH> 140,371 185,459 141,559 <SECURITIES> 88,746 41,093 16,069 <RECEIVABLES> 245,456 202,431 169,159 <ALLOWANCES> 13,278 15,089 27,104 <INVENTORY> 0 0 0 <CURRENT-ASSETS> 491,106 437,522 338,196 <PP&E> 247,764 254,157 263,544 <DEPRECIATION> 187,178 178,312 167,119 <TOTAL-ASSETS> 646,212 622,065 566,021 <CURRENT-LIABILITIES> 332,286 406,262 476,999 <BONDS> 0 0 0 <PREFERRED-MANDATORY> 0 0 0 <PREFERRED> 0 0 0 <COMMON> 2,073 1,913 1,545 <OTHER-SE> 310,433 210,131 59,217 <TOTAL-LIABILITY-AND-EQUITY> 646,212 622,065 566,021 <SALES> 442,829 383,947 378,164 <TOTAL-REVENUES> 871,536 735,506 663,892 <CGS> 43,097 35,446 63,027 <TOTAL-COSTS> 216,761 191,393 229,943 <OTHER-EXPENSES> 556,262 490,827 793,402 <LOSS-PROVISION> 0 0 0 <INTEREST-EXPENSE> 4,316 5,849 9,405 <INCOME-PRETAX> 10,717 54,584 (352,571) <INCOME-TAX> 21,881 4,400 7,817 <INCOME-CONTINUING> (11,164) 50,184 (360,388) <DISCONTINUED> 0 0 0 <EXTRAORDINARY> 0 0 0 <CHANGES> 0 0 0 <NET-INCOME> (11,164) 50,184 (360,388) <EPS-BASIC> (0.06) 0.26 (2.37) <EPS-DILUTED> (0.06) 0.25 (2.37)