<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED CONDENSED BALANCE SHEETS AT MARCH 31, 1997, JUNE 30, 1997, AND
SEPTEMBER 30, 1997 AND THE UNAUDITED CONDENSED STATEMENTS OF INCOME FOR THE
PERIODS ENDED MARCH 31, 1997, JUNE 30, 1997, AND SEPTEMBER 30, 1997 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDED IN
FORM 10-QS. CERTAIN ENTRIES ON EACH OF THESE SCHEDULES HAVE BEEN RESTATED FROM
THE PREVIOUS FINANCIAL DATA SCHEDULE FILED FOR EACH OF THE PERIODS INDICATED.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                           9,602                   9,113                   7,102
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                    3,127                   1,950                   3,001
<ALLOWANCES>                                       175                     250                     208
<INVENTORY>                                          9                      67                       0
<CURRENT-ASSETS>                                14,794                  13,365                  11,958
<PP&E>                                           4,361                   4,488                   5,696
<DEPRECIATION>                                   2,102                   2,245                   2,377
<TOTAL-ASSETS>                                  17,248                  15,790                  15,449
<CURRENT-LIABILITIES>                            8,048                   6,310                   6,284
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             9                       9                       9
<OTHER-SE>                                       9,019                   9,340                   9,052
<TOTAL-LIABILITY-AND-EQUITY>                    17,248                  15,790                  15,449
<SALES>                                          8,084                  16,680                  25,855
<TOTAL-REVENUES>                                11,591                  23,890                  36,858
<CGS>                                            6,610                  13,563                  21,270
<TOTAL-COSTS>                                    6,610                  13,563                  21,270
<OTHER-EXPENSES>                                 4,638                   9,803                  14,849
<LOSS-PROVISION>                                     0                      75                     100
<INTEREST-EXPENSE>                                  42                      58                      92
<INCOME-PRETAX>                                    427                     748                   1,071
<INCOME-TAX>                                         0                       0                       0
<INCOME-CONTINUING>                                  0                       0                   1,071
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                       427                     748                   1,071
<EPS-PRIMARY>                                      .05                     .09                     .12
<EPS-DILUTED>                                      .05                     .09                     .12


</TABLE>