<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   YEAR                     YEAR
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1997
<PERIOD-START>                             JAN-01-1996             JAN-01-1997
<PERIOD-END>                               DEC-31-1996             DEC-31-1997
<CASH>                                           4,289                  27,867
<SECURITIES>                                         0                  49,560
<RECEIVABLES>                                   28,688                  38,281
<ALLOWANCES>                                       200                   1,236
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                35,282                 113,149
<PP&E>                                          11,426                  15,274
<DEPRECIATION>                                   4,304                   6,404
<TOTAL-ASSETS>                                  43,819                 127,223
<CURRENT-LIABILITIES>                           30,134                  33,943
<BONDS>                                          1,360                     731
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          2                       0
<COMMON>                                           156                     253
<OTHER-SE>                                      12,167                  92,296
<TOTAL-LIABILITY-AND-EQUITY>                    43,819                 127,223
<SALES>                                              0                       0
<TOTAL-REVENUES>                                56,864                 105,411
<CGS>                                                0                       0
<TOTAL-COSTS>                                   19,107                  47,325
<OTHER-EXPENSES>                                31,976                  40,502
<LOSS-PROVISION>                                   200                   1,144
<INTEREST-EXPENSE>                                  77                 (2,238)
<INCOME-PRETAX>                                  5,504                  18,678
<INCOME-TAX>                                     2,084                   7,470
<INCOME-CONTINUING>                              3,420                  11,208
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     3,420                  11,208
<EPS-PRIMARY>                                      .22                     .52
<EPS-DILUTED>                                      .17                     .46