<qa>  What is the recommended phase II dose of BMS-247550?I. Determine the recommended phase II dose of BMS-247550 when administered with cisplatin in patients with metastatic or recurrent squamous cell carcinoma of the head and neck. Phase I II. Determine the toxic effects of this regimen in these patients. III. Determine the response rate, time to progression, and survival of patients treated with this regimen. Phase II IV. Determine the pharmacokinetics of this regimen in these patients. V. Correlate selected markers from peripheral blood mononuclear cells and tumor samples with toxicity and response in patients treated with this regimen. 