VAD REGIMEN (DHPLNR with favorable histology WT with viable elements): Patients receive vincristine sulfate IV over 1 minute on days 43, 50, 57, 64, 71, and 78 (weeks 7-12) and dactinomycin IV over 1-5 minutes and doxorubicin hydrochloride IV over 15-120 minutes on days 43 and 64 (weeks 7 and 10).