<qa>  What is the first evaluation of gemcitabine hydrochloride IV?- Arm II: Patients receive gemcitabine hydrochloride IV over 30 minutes on days 1, 8, 15, 22, 29, 36, and 43. Following the first evaluation, patients continue to receive gemcitabine hydrochloride on days 57, 64, 71, 85, 92, and 99. Patients also receive oral erlotinib hydrochloride once daily for 4 months. 