OUTLINE: Patients are treated on Regimen A, then Regimen B. Regimen A: Stem Cell Mobilization. Granulocyte Colony Stimulating Factor (Amgen), G-CSF, NSC-614629. Regimen B: Radiotherapy and Myeloablative Chemotherapy with Hematopoietic Rescue. Total-Body Irradiation, TBI (high-energy electrons used for lung boost); and Etoposide, VP-16, NSC-141540; with Peripheral Blood Stem Cells, PBSC; G-CSF.