 - Patients must not have received treatment for their myeloid disorder within 2 weeks of beginning the trial. Treatments include the use of chemotherapy, hematopoietic growth factors, and biologic therapy such as monoclonal antibodies. The exception is the use of hydroxyurea for patients with an elevated WBC. Given the relatively slower expected clinical response with the study drugs, patients may continue to receive hydroxyurea through the first cycle of therapy. 