RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Giving a chemotherapy drug before surgery may shrink the tumor so that it can be removed during surgery. Radiation therapy uses high-energy x-rays to damage tumor cells. It is not yet known whether chemotherapy followed by surgery with or without radiation therapy is more effective than chemotherapy followed by radiation therapy alone in treating non-small cell lung cancer.