PROTOCOL OUTLINE: This is a multicenter study. Patients undergo total body irradiation on day 0, followed by allogeneic bone marrow transfusion. Patients also receive fludarabine IV daily and cyclosporine IV twice a day on days -1 to 1. Patients then receive oral cyclosporine on days 1-90, and oral mycophenolate mofetil twice a day on days 0-27.