 Treatment: Patients in this study will receive arsenic trioxide, doxorubicin, vincristine and dexamethasone. During the first five days of the study, patients will be given arsenic trioxide each day through an intravenous infusion. No treatments will be provided on days six and seven. After this first week, patients will then receive study drugs on the following schedule every four weeks: doxorubicin and vincristine on day one, dexamethasone on days one through four, and arsenic trioxide twice each week. This schedule can be repeated up to four times for a total of approximately four months. Several tests and exams will be given throughout the study to closely monitor patients. Supportive care will be provided to help regulate side effects from study drugs and maintain quality of life in patients. Treatments will be discontinued due to disease growth or unacceptable side effects. 