<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET, CONSOLIDATED STATEMENT OF OPERATIONS, AND
CONSOLIDATED STATEMENT OF CASH FLOWS INCLUDED IN THE COMPANY'S FORM 10-Q FOR THE
PERIOD ENDING MARCH 31, 2000, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                         111,753
<SECURITIES>                                   124,804
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                               239,507
<PP&E>                                          29,038
<DEPRECIATION>                                  13,431
<TOTAL-ASSETS>                                 282,199
<CURRENT-LIABILITIES>                           21,734
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            47
<OTHER-SE>                                     247,780
<TOTAL-LIABILITY-AND-EQUITY>                   282,199
<SALES>                                              0
<TOTAL-REVENUES>                                 5,676
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                21,167
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               (357)
<INCOME-PRETAX>                               (14,727)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (14,727)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                      (4,800)
<NET-INCOME>                                  (19,527)
<EPS-BASIC>                                     (0.44)
<EPS-DILUTED>                                   (0.44)