Pain after surgery for lung cancer (thoracotomy) may persist for years and require long-term analgesic use. Prior studies have shown that acupuncture reduces pain and medication use in the early post-operative period after abdominal surgery, suggesting that acupuncture may have a role in preventing chronic post-thoracotomy pain. This study is being done in order to determine the effects of acupuncture on pain in patients undergoing surgery for lung cancer.