If you are found to be eligible to take part in this study, you will receive cetuximab once a week through a needle in a vein. Each treatment cycle is 4 weeks long. In the first week of your first treatment cycle only, you will receive cetuximab over 120 minutes (2 hours). For all additional treatments, you will receive cetuximab over 60 minutes. During the infusion and for 60 minutes after the infusion ends, you will be closely watched for signs of an allergic reaction.