Chemotherapy: Patients must have received one regimen of palliative first line chemotherapy (must be platinum containing combination unless patient's age > 70 years) which may not have contained docetaxel. Patients who have had concurrent platinum based chemoradiotherapy for stage three disease and have relapsed within one year of treatment, or patients who have had platinum based adjuvant chemotherapy after complete surgical resection and have relapsed within one year of treatment, may be considered to have had one prior platinum containing regimen.