<TABLE> <S> <C>

<ARTICLE> 5
<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>                                           7,505                  23,757                  12,245
<SECURITIES>                                    33,105                  21,484                   7,467
<RECEIVABLES>                                   19,874                  14,157                  13,213
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                                62,132                  60,681                  33,753
<PP&E>                                          10,339                   7,885                   6,116
<DEPRECIATION>                                       0                       0                       0
<TOTAL-ASSETS>                                  76,244                  72,130                  43,281
<CURRENT-LIABILITIES>                            6,640                   5,370                   4,655
<BONDS>                                          1,624                   1,705                   1,569
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             0                       0                       0
<OTHER-SE>                                      66,173                  63,420                  35,565
<TOTAL-LIABILITY-AND-EQUITY>                    76,244                  72,130                  43,281
<SALES>                                         13,559                  11,095                   9,699
<TOTAL-REVENUES>                                13,559                  11,095                   9,699
<CGS>                                            3,096                   2,708                   2,452
<TOTAL-COSTS>                                    3,096                   2,708                   2,452
<OTHER-EXPENSES>                                 7,960                   6,767                   5,892
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               (587)                   (295)                   (225)
<INCOME-PRETAX>                                  3,090                   1,915                   1,580
<INCOME-TAX>                                     1,149                     706                     616
<INCOME-CONTINUING>                              1,890                   1,199                     906
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     1,890                   1,199                     906
<EPS-PRIMARY>                                      .20                     .15                     .12
<EPS-DILUTED>                                      .17                     .13                     .10
        

</TABLE>