1)Relapsed or refractory, Stage IIIB or Stage IV NSCLC that has been histologially or cytologically confirmed. 2)One prior line of conventional cytotoxic chemotherapy. 3)Documented progressive disease(PD) during or since last prior therapy as determined by the investigator. 4)18 y/o or older. 5)Have measurable disease by RECIST. 6)Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1. 7)Life expectancy greater than 3 mo from the date of enrollment. 8)Female patient is either post-menopausal, surgically sterilized or willing to use an acceptable method of birth control. 9)Male pateint agrees to use an acceptable method of birth control during study treatment. 10)Provide written informed consent before the conduct of any study-related procedure. 11)Willing and able to comply with the protocol requirements.