<ARTICLE> 5

                                                                                            
<PERIOD-TYPE>                   12-MOS                   9-MOS                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1998             MAR-31-1998             MAR-31-1998             MAR-31-1998
<PERIOD-START>                             APR-01-1997             APR-01-1997             APR-01-1997             APR-01-1997
<PERIOD-END>                               MAR-31-1998             DEC-31-1997             SEP-30-1997             JUN-30-1997
<CASH>                                         206,278                 112,069                  97,729                 113,476
<SECURITIES>                                         7                       7                       7                       0
<RECEIVABLES>                                  397,385                 351,616                 280,633                 270,132
<ALLOWANCES>                                     8,812                   7,928                   5,991                   6,560
<INVENTORY>                                          0                       0                       0                       0
<CURRENT-ASSETS>                               676,275                 537,694                 443,644                 433,590
<PP&E>                                         133,737                 129,484                 122,635                 117,545
<DEPRECIATION>                                  49,243                  47,392                  44,439                  41,997
<TOTAL-ASSETS>                               1,072,640                 937,810                 815,302                 766,534
<CURRENT-LIABILITIES>                          313,951                 283,631                 231,923                 237,509
<BONDS>                                          6,956                   6,876                  10,609                  10,711
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                         3,603                   3,584                   3,492                   3,456
<OTHER-SE>                                     708,322                 611,033                 532,083                 479,257
<TOTAL-LIABILITY-AND-EQUITY>                 1,072,640                 937,810                 533,470                 766,534
<SALES>                                      1,139,318                 781,494                 471,859                 224,478
<TOTAL-REVENUES>                             1,139,318                 781,494                 471,859                 224,478
<CGS>                                          865,965                 613,777                 382,057                 184,480
<TOTAL-COSTS>                                  865,965                 613,777                 382,057                 184,480
<OTHER-EXPENSES>                                     0                       0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                               1,147                     965                     663                     183
<INCOME-PRETAX>                                290,770                 176,001                  94,336                  42,387
<INCOME-TAX>                                    96,826                  58,608                  31,414                  14,115
<INCOME-CONTINUING>                            193,944                 117,393                  62,922                  28,272
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                   193,944                 117,393                  62,922                  28,272
<EPS-BASIC>                                       0.55                    0.34                    0.18                    0.08
<EPS-DILUTED>                                     0.50                    0.31                    0.17                    0.08