This research is being done to find out if a treatment consisting of a combination of thoracic radiotherapy with cetuximab, given together, and followed by chemotherapy with docetaxel and cetuximab (also given together) will kill the cancer cells in the patient's body and shrink the size of their tumor without causing unacceptable side effects. This may allow patients to live longer or decrease the frequency and/or severity of the symptoms caused by the cancer without increasing the frequency and/or severity of the symptoms caused by the treatment.