<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998             DEC-31-1998             DEC-31-1998
<PERIOD-START>                             JAN-01-1998             JAN-01-1998             JAN-01-1998             JAN-01-1998
<PERIOD-END>                               MAR-31-1998             JUN-30-1998             SEP-30-1998             DEC-31-1998
<CASH>                                          19,610                  15,688                  25,751                  32,555
<SECURITIES>                                     4,332                   3,723                   1,384                   9,614
<RECEIVABLES>                                   23,792                  34,197                  31,675                  20,378
<ALLOWANCES>                                         0                       0                       0                       0
<INVENTORY>                                          0                       0                       0                       0
<CURRENT-ASSETS>                                50,735                  56,599                  62,289                  67,455
<PP&E>                                           4,900                   4,846                   5,812                   7,221
<DEPRECIATION>                                       0                       0                       0                       0
<TOTAL-ASSETS>                                  59,273                  65,123                  74,770                  81,831
<CURRENT-LIABILITIES>                           13,265                  15,559                  18,807                  16,926
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                        33,969                  34,493                  37,493                  41,442
<OTHER-SE>                                       9,196                  12,325                  15,488                  19,607
<TOTAL-LIABILITY-AND-EQUITY>                    59,273                  65,123                  74,770                  81,831
<SALES>                                              0                       0                       0                       0
<TOTAL-REVENUES>                                26,837                  59,502                  94,437                 130,633
<CGS>                                                0                       0                       0                       0
<TOTAL-COSTS>                                   12,631                  28,446                  46,754                  60,201
<OTHER-EXPENSES>                                10,633                  22,368                  35,508                  49,227
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0                       0
<INCOME-PRETAX>                                  3,573                   8,728                  13,896                  21,205
<INCOME-TAX>                                     1,408                   3,357                   5,677                   8,446
<INCOME-CONTINUING>                              2,165                   5,371                   8,219                  12,759
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                     2,165                   5,371                   8,219                  12,759
<EPS-BASIC>                                       0.09                    0.23                    0.34                    0.53
<EPS-DILUTED>                                     0.08                    0.21                    0.32                    0.49


</TABLE>