<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S MARCH 31, 1998 FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                                        
<PERIOD-TYPE>                              3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                          24,587
<SECURITIES>                                         0
<RECEIVABLES>                                   59,880
<ALLOWANCES>                                     1,421
<INVENTORY>                                          0
<CURRENT-ASSETS>                                96,923
<PP&E>                                         133,334
<DEPRECIATION>                                  57,526
<TOTAL-ASSETS>                                 184,567
<CURRENT-LIABILITIES>                           55,832
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           750
<OTHER-SE>                                     121,698
<TOTAL-LIABILITY-AND-EQUITY>                   184,567
<SALES>                                         61,835
<TOTAL-REVENUES>                                61,835
<CGS>                                           44,294
<TOTAL-COSTS>                                   58,706
<OTHER-EXPENSES>                                 (627)
<LOSS-PROVISION>                                   402
<INTEREST-EXPENSE>                                 339
<INCOME-PRETAX>                                  3,756
<INCOME-TAX>                                       716
<INCOME-CONTINUING>                              3,040
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,040
<EPS-PRIMARY>                                      .20
<EPS-DILUTED>                                      .20