OUTLINE: This is a randomized study. Patients are stratified according to disease stage (stage I pure fetal histology vs stage I other histology or stage II [stage II closed to accrual as of 11-25-03] vs stage III or IV [stages III and IV closed to accrual as of 11-25-03]). Patients are randomized to one of four treatment arms. (Arms III and IV closed to accrual as of 4-5-02) (Arm II closed to accrual as of 11-25-03)