5. Adequate bone marrow, liver and renal function as assessed by the following: Hematocrit > or = to 29%, ANC > or = to 1,500/mm3, Platelet count > or = to 125,000/mm3, Total bilirubin < or = to 1.5 x ULN, ALT and AST < or = to 2.5 x the ULN ( < or = to 5 x ULN for patients with liver involvement), INR < 1.5 or a PT/PTT within normal limits (unless on therapeutic anti-coagulation). Patients receiving anti-coagulation treatment with a low-molecular weight heparin will be allowed to participate, however oral warfarin is not permitted except for low-dose warfarin (1mg po DAILY), Creatinine < 1.5 x ULN, Serum Na, K+, Mg2+, Phosphate and Ca2+ > or = to Lower Limit of Normal (LLN);