 ZD6474 is a new investigational drug that is thought to block the formation of new blood vessels. The growth of new blood vessels is called angiogenesis. Angiogenesis is thought to be essential for the growth of tumors beyond a small size. It is hoped that ZD6474 will limit new blood vessel growth in the tumor and starve the tumor by limiting blood flow to it. The second part of this study also includes paclitaxel Taxol and carboplatin Paraplatin. Both paclitaxel and carboplatin are standard chemotherapy drugs that are approved by the FDA for use in the treatment of lung cancer. 