<ARTICLE> 5
       
                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997
<PERIOD-START>                             APR-01-1997             JAN-01-1997
<PERIOD-END>                               JUN-30-1997             JUN-30-1997
<CASH>                                     172,531,872             172,531,872
<SECURITIES>                                56,412,533              56,412,533
<RECEIVABLES>                               10,290,304              10,290,304
<ALLOWANCES>                                 2,948,241               2,948,241
<INVENTORY>                                    822,282                 822,282
<CURRENT-ASSETS>                           242,344,311             242,344,311
<PP&E>                                       4,955,243               4,955,243
<DEPRECIATION>                               1,076,806               1,076,806
<TOTAL-ASSETS>                             268,793,998             268,793,998
<CURRENT-LIABILITIES>                       49,191,241              49,191,241
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        27,309                  27,309
<OTHER-SE>                                 161,700,448             161,700,448
<TOTAL-LIABILITY-AND-EQUITY>               268,793,998             268,793,998
<SALES>                                     24,517,149              46,037,754
<TOTAL-REVENUES>                            24,517,149              46,037,754
<CGS>                                        2,290,551               4,484,381
<TOTAL-COSTS>                                2,290,551               4,484,381
<OTHER-EXPENSES>                            11,528,160              20,722,125
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                             12,967,006              24,674,432
<INCOME-TAX>                                 4,668,121               8,882,795
<INCOME-CONTINUING>                          8,298,885              15,791,637
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                 8,298,885              15,791,637
<EPS-PRIMARY>                                     0.20                    0.39
<EPS-DILUTED>                                     0.19                    0.37