Patients Randomized to receive VAD (vincristine, adriamycin, dexamethasone): All patients received four cycles of VAD repeated every 4 weeks. Chemotherapy was administered by continuous IV Infusion for 96 hours: vincristine at a dose of 0.4 mg/day and doxorubicin at a dose of 9 mg/m^2/day. Patients were administered dexamethasone 40 mg by mouth (PO) on days 1 to 4, 9 to 12, and 17 to 20 of the initial two cycles. Dexamethasone was given only on days 1-4 of all subsequent cycles. Patients were randomized to receive zoledronic acid IV on either Day 1 or 15 of each cycle. This schedule continued monthly as long as the patient remained on study. The dose was calculated based on the patients' monthly creatinine clearance. Upon initiation of Zometa therapy, the following guidelines were applied: For patients with creatinine clearance >60 mL/min, the recommended dose remained at 4mg. For patients with reduced creatinine clearance, dosing was calculated to achieve the same area under curve (AUC) as in patients with creatinine clearance of 75 mL/min. Creatinine clearance was calculated using the Cockcroft-Gault formula.