<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
EXHIBIT 27.4
</LEGEND>
<MULTIPLIER> 1,000

       
<S>                                        <C>                     <C>                     <C>
<PERIOD-TYPE>                              3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JUL-01-1997             APR-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1997             JUN-30-1997             MAR-31-1997
<CASH>                                           8,843                  26,645                  15,388
<SECURITIES>                                    34,088                  21,484                   7,467
<RECEIVABLES>                                   23,605                  17,955                  16,952
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                                68,301                  67,492                  40,677
<PP&E>                                          11,659                   9,114                   7,140
<DEPRECIATION>                                       0                       0                       0
<TOTAL-ASSETS>                                  84,042                  80,482                  51,518
<CURRENT-LIABILITIES>                           10,881                   9,248                   8,186
<BONDS>                                              0                       0                       0
<COMMON>                                             0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<OTHER-SE>                                      69,297                  67,036                  39,337
<TOTAL-LIABILITY-AND-EQUITY>                    84,042                  80,482                  51,518
<SALES>                                         18,898                  17,026                  15,340
<TOTAL-REVENUES>                                18,898                  17,026                  15,340
<CGS>                                            6,131                   6,379                   5,904
<TOTAL-COSTS>                                    6,131                   6,379                   5,904
<OTHER-EXPENSES>                                10,931                   9,350                   8,380
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               (576)                   (287)                   (215)
<INCOME-PRETAX>                                  2,412                   1,584                   1,271
<INCOME-TAX>                                       892                     578                     477
<INCOME-CONTINUING>                              1,469                     996                     736
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     1,469                     996                     736
<EPS-PRIMARY>                                     0.14                    0.11                    0.08
<EPS-DILUTED>                                     0.12                    0.09                    0.07
        

</TABLE>