Patients receive cetuximab IV over 2 hours on day -7, then IV over 1 hour on days 1, 8, 15, 22, and 29. Patients also receive cisplatin IV over 1 hour on day 1 or 2 and fluorouracil IV continuously on days 1-4, 8-11, 15-18, 22-25, and 29-32. Patients undergo radiotherapy 5 days a week for 5 weeks, beginning on day 1 of chemotherapy. Treatment continues in the absence of disease progression or unacceptable toxicity.