<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> MAR-31-1999 <CASH> 23,079 <SECURITIES> 26,342 <RECEIVABLES> 11,857 <ALLOWANCES> (420) <INVENTORY> 0 <CURRENT-ASSETS> 63,273 <PP&E> 33,911 <DEPRECIATION> (14,278) <TOTAL-ASSETS> 97,043 <CURRENT-LIABILITIES> 7,139 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,894 <OTHER-SE> 84,729 <TOTAL-LIABILITY-AND-EQUITY> 86,623 <SALES> 16,535 <TOTAL-REVENUES> 18,188 <CGS> 7,432 <TOTAL-COSTS> 7,432 <OTHER-EXPENSES> 8,244 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> (443) <INCOME-PRETAX> 2,955 <INCOME-TAX> 1,005 <INCOME-CONTINUING> 1,950 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,950 <EPS-BASIC> 0.10 <EPS-DILUTED> 0.10