<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S CONSOLIDATED FINANCIAL STATEMENTS FOR THE QUARTERLY PERIOD ENDED JUNE
30, 1998, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH CONSOLIDATED
FINANCIAL STATEMENTS.
</LEGEND>
       
<S>                                                    <C>                  <C>
<PERIOD-TYPE>                                                6-Mos                6-Mos  
<FISCAL-YEAR-END>                                      DEC-31-1997          DEC-31-1998  
<PERIOD-END>                                           JUN-30-1997          JUN-30-1998  
<CASH>                                                   1,690,834            1,810,396  
<SECURITIES>                                                     0                    0  
<RECEIVABLES>                                              861,138              780,913  
<ALLOWANCES>                                                     0                    0  
<INVENTORY>                                                312,269              204,719  
<CURRENT-ASSETS>                                         3,120,189            3,735,728  
<PP&E>                                                   1,675,220            3,665,803  
<DEPRECIATION>                                             814,267            1,235,197  
<TOTAL-ASSETS>                                           7,746,368           10,567,369  
<CURRENT-LIABILITIES>                                    2,007,482            2,336,408  
<BONDS>                                                          0            3,742,576  
<PREFERRED-MANDATORY>                                            0                    0  
<PREFERRED>                                                      0                8,460  
<COMMON>                                                 1,220,302            1,994,686  
<OTHER-SE>                                               6,526,061           (3,549,899) 
<TOTAL-LIABILITY-AND-EQUITY>                             7,746,368           10,567,369  
<SALES>                                                  1,342,855              756,660  
<TOTAL-REVENUES>                                         1,342,855              756,660  
<CGS>                                                      355,440              123,389  
<TOTAL-COSTS>                                            4,324,696            4,884,475  
<OTHER-EXPENSES>                                           243,827            1,123,728  
<LOSS-PROVISION>                                                 0                    0  
<INTEREST-EXPENSE>                                               0              463,977  
<INCOME-PRETAX>                                         (3,489,025)          (6,035,538) 
<INCOME-TAX>                                                     0                    0  
<INCOME-CONTINUING>                                     (3,489,025)          (6,035,538) 
<DISCONTINUED>                                                   0                    0  
<EXTRAORDINARY>                                                  0                    0  
<CHANGES>                                                        0                    0  
<NET-INCOME>                                            (3,489,025)          (6,035,538) 
<EPS-PRIMARY>                                                  .29                  .35  
<EPS-DILUTED>                                                  .29                  .35  
        


</TABLE>