RATIONALE: Drugs used in chemotherapy, such as docetaxel and cisplatin, use different ways to stop tumor cells from dividing so they stop growing or die. Radiation therapy uses high-energy x-rays to damage tumor cells. Giving chemotherapy with radiation therapy before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed. It is not yet known if chemotherapy plus radiation therapy is more effective than chemotherapy alone before surgery in treating non-small cell lung cancer.