<ARTICLE> 5 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> DEC-31-1997 <CASH> 93,836 <SECURITIES> 0 <RECEIVABLES> 29,525 <ALLOWANCES> (22,075) <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 237,580 <DEPRECIATION> (227,868) <TOTAL-ASSETS> 111,282 <CURRENT-LIABILITIES> 0 <BONDS> 0 <COMMON> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 97,925 <TOTAL-LIABILITY-AND-EQUITY> 111,282 <SALES> 0 <TOTAL-REVENUES> 188,685 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 166,310 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 22,375 <INCOME-TAX> 0 <INCOME-CONTINUING> 22,375 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 22,375 <EPS-PRIMARY> (3.78) <EPS-DILUTED> (3.78)