<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEETS AT DECEMBER 31, 1995 AND MARCH 31, 1996 AND CONSOLIDATED
STATEMENTS OF OPERATIONS FOR THE THREE MONTHS ENDED MARCH 31 1995 AND 1996, AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

<S>                                        <C>                     <C>
<RESTATED>
<MULTIPLIER>      1,000
<PERIOD-TYPE>                                    9-MOS                    YEAR
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996
<PERIOD-START>                             JAN-01-1996             JAN-01-1996
<PERIOD-END>                               SEP-30-1996             DEC-31-1996
<CASH>                                           9,841                  13,615
<SECURITIES>                                    21,600                  13,828
<RECEIVABLES>                                      383                     481
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                   669                  28,206
<PP&E>                                           1,424                   1,745
<DEPRECIATION>                                       0                       0
<TOTAL-ASSETS>                                  34,563                  30,513
<CURRENT-LIABILITIES>                            5,535                   5,724
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            13                      13
<OTHER-SE>                                      28,430                  24,143
<TOTAL-LIABILITY-AND-EQUITY>                    34,563                  30,513
<SALES>                                          3,655                   4,888
<TOTAL-REVENUES>                                 7,024                   8,257
<CGS>                                            1,429                   2,025
<TOTAL-COSTS>                                    1,429                   2,025
<OTHER-EXPENSES>                                12,367                  19,091
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                  69                     103
<INCOME-PRETAX>                                 (5,924)                (11,688)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                             (5,924)                (11,688)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    (5,924)                (11,688)
<EPS-PRIMARY>                                    (0.45)<F1>              (0.97)<F1>
<EPS-DILUTED>                                    (0.45)                  (0.97)
<FN>
<F1>For Purposes of This Exhibit, Primary means Basic.
</FN>


</TABLE>