<ARTICLE> 5
<RESTATED> 
       
                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998
<PERIOD-START>                             APR-01-1998             JAN-01-1998
<PERIOD-END>                               JUN-30-1998             JUN-30-1998
<CASH>                                     152,812,285             152,812,285
<SECURITIES>                                79,588,728              79,588,728
<RECEIVABLES>                               42,522,736              42,522,736
<ALLOWANCES>                                 6,322,808               6,322,808
<INVENTORY>                                  3,372,550               3,372,550
<CURRENT-ASSETS>                           287,437,395             287,437,395
<PP&E>                                      16,788,792              16,788,792
<DEPRECIATION>                               3,924,702               3,924,702
<TOTAL-ASSETS>                             379,282,937             379,282,937
<CURRENT-LIABILITIES>                      109,197,899             109,197,899
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        41,912                  41,912
<OTHER-SE>                                 226,980,641             226,980,641
<TOTAL-LIABILITY-AND-EQUITY>               379,282,937             379,282,937
<SALES>                                     56,203,708             105,505,630
<TOTAL-REVENUES>                            56,203,708             105,505,630
<CGS>                                        4,680,560               9,529,997
<TOTAL-COSTS>                                4,680,560               9,529,997
<OTHER-EXPENSES>                            39,041,348              66,970,087
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                             15,031,920              34,215,375
<INCOME-TAX>                                 5,411,491              12,317,535
<INCOME-CONTINUING>                          9,620,429              21,897,840
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                 9,620,429              21,897,840
<EPS-PRIMARY>                                     0.23                    0.52
<EPS-DILUTED>                                     0.21                    0.49