 - Arm I: Patients receive interleukin-2 subcutaneously SC on days 3, 4, and 5 of weeks 1 and 4 and on days 1, 3, and 5 of weeks 2 and 3. Patients also receive interferon alfa SC once weekly during weeks 1 and 4 and 3 times weekly during weeks 2, 3, 5, 6, 7, and 8. Patients then receive fluorouracil IV on day 1 of weeks 5, 6, 7, and 8. 