<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               SEP-30-2000
<CASH>                                          50,776
<SECURITIES>                                    32,958
<RECEIVABLES>                                  103,332
<ALLOWANCES>                                     4,150
<INVENTORY>                                          0
<CURRENT-ASSETS>                               190,140
<PP&E>                                          75,240
<DEPRECIATION>                                  39,332
<TOTAL-ASSETS>                                 335,643
<CURRENT-LIABILITIES>                           96,584
<BONDS>                                         39,385
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           532
<OTHER-SE>                                     198,666
<TOTAL-LIABILITY-AND-EQUITY>                   335,643
<SALES>                                        290,195
<TOTAL-REVENUES>                               290,195
<CGS>                                          110,862
<TOTAL-COSTS>                                  110,862
<OTHER-EXPENSES>                                30,941
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               4,478
<INCOME-PRETAX>                                105,545
<INCOME-TAX>                                    39,822
<INCOME-CONTINUING>                             65,723
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    65,723
<EPS-BASIC>                                       1.26<F1>
<EPS-DILUTED>                                     1.16<F1>
<FN>
<F1>In thousands, except per share amounts.
</FN>