<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                         601,116                 386,887               1,996,047
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                  730,767               3,109,929               1,705,814
<ALLOWANCES>                                    50,000                  50,000                  50,000
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                             3,321,492               4,365,945               4,903,989
<PP&E>                                         814,560                 828,895                 652,281
<DEPRECIATION>                                 706,111                 726,351                 610,822
<TOTAL-ASSETS>                               7,889,196               8,862,074               9,322,452
<CURRENT-LIABILITIES>                        5,137,588               5,930,774               5,930,774
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                  2,235,674               2,235,674               2,235,674
<COMMON>                                        72,119                  73,429                  73,429
<OTHER-SE>                                     262,563                 482,306                 551,735
<TOTAL-LIABILITY-AND-EQUITY>                 7,889,196               8,862,074               9,322,452
<SALES>                                      1,414,186               3,431,835               3,572,313
<TOTAL-REVENUES>                             1,414,186               3,431,835               3,572,313
<CGS>                                          973,140               2,593,348               2,765,551
<TOTAL-COSTS>                                1,499,471               3,066,335               3,324,106
<OTHER-EXPENSES>                               (3,575)                 (4,797)                 (2,130)
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                              50,658                  61,979                  76,775
<INCOME-PRETAX>                              (132,187)                 308,318                 173,562
<INCOME-TAX>                                         0                  65,521                  56,872
<INCOME-CONTINUING>                          (132,187)                 242,797                 116,690
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                 (132,187)                 242,797                 116,690
<EPS-PRIMARY>                                   (0.25)                    0.20                    0.09
<EPS-DILUTED>                                   (0.25)                    0.20                    0.09


</TABLE>