<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<RESTATED> 
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1996             DEC-31-1996
<PERIOD-START>                             JAN-01-1996             JAN-01-1996             JAN-01-1996             JAN-01-1996
<PERIOD-END>                               MAR-31-1996             JUN-30-1996             SEP-30-1996             DEC-31-1996
<CASH>                                           8,344                 972,952               1,138,479                 739,140
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                  316,563                   2,742                  12,096                 991,544
<ALLOWANCES>                                         0                       0                       0                       0
<INVENTORY>                                          0                       0                       0                       0
<CURRENT-ASSETS>                               997,398               1,683,333               3,375,635               5,039,850
<PP&E>                                       1,451,314               1,886,799               2,469,362               2,715,604
<DEPRECIATION>                                 364,544                 408,907                 431,650                 482,179
<TOTAL-ASSETS>                               5,812,888               6,730,017               7,049,436               7,682,535
<CURRENT-LIABILITIES>                        3,182,067               3,370,135               5,136,554               4,219,431
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                    927,167                 927,167                 760,260                 760,260
<COMMON>                                        49,426                  50,626                  51,382                  57,311
<OTHER-SE>                                  (2,307,366)             (1,619,588)               (690,985)              2,218,933
<TOTAL-LIABILITY-AND-EQUITY>                 5,812,888               6,730,017               7,049,436               7,682,535
<SALES>                                        606,833               1,986,653               4,221,125               7,012,864
<TOTAL-REVENUES>                               607,068               1,986,889               4,225,185               7,044,015
<CGS>                                                0                       0                       0                       0
<TOTAL-COSTS>                                  220,802                 620,609               1,204,939               2,118,966
<OTHER-EXPENSES>                               272,277                 668,675               1,088,318               1,672,321
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                             131,111                 266,227                 398,511                 488,408
<INCOME-PRETAX>                                (17,122)                431,378               1,553,417               2,764,320
<INCOME-TAX>                                         0                 163,899                 582,781                 940,000
<INCOME-CONTINUING>                            (17,122)                267,479                 950,636               1,824,320
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                   (17,122)                267,479                 950,636               1,824,320
<EPS-PRIMARY>                                    (0.01)<F1>               0.04<F1>                0.18<F1>                0.34<F1>
<EPS-DILUTED>                                    (0.01)<F2>                0.04<F2>                0.16<F2>                0.30<F2>
<FN>
<F1>EPS-Basic per SFAS No. 128
<F2>EPS-Diluted per SFAS No. 128
</FN>
        

</TABLE>