<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                         142,160
<SECURITIES>                                    70,931
<RECEIVABLES>                                  194,963
<ALLOWANCES>                                    14,580
<INVENTORY>                                          0
<CURRENT-ASSETS>                               425,696
<PP&E>                                         248,542
<DEPRECIATION>                                 180,990
<TOTAL-ASSETS>                                 591,793
<CURRENT-LIABILITIES>                          366,074
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         1,896
<OTHER-SE>                                     221,894
<TOTAL-LIABILITY-AND-EQUITY>                   591,793
<SALES>                                         97,907
<TOTAL-REVENUES>                               196,598
<CGS>                                           10,107
<TOTAL-COSTS>                                   54,890
<OTHER-EXPENSES>                               132,930
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,164
<INCOME-PRETAX>                                  8,878
<INCOME-TAX>                                     1,332
<INCOME-CONTINUING>                              7,546
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,546
<EPS-PRIMARY>                                     0.04
<EPS-DILUTED>                                     0.04