My father was just diagnosed in July. He has had 10 sessions of full brain radiation, and was to start Taxotere this past friday. Well he was allergic to it, so we go back this friday to see what his options are now. They told my dad that without any treatment at all he would have 6 weeks, with just radiation, 3 to 4 months. And with chemo in addition to the radiation, 8 to 10 months. I don't know too much about lung cancer, but I'll tell you I have been reading alot of uplifting postings that get my spirits up, letting me hope for just a few more months with my dad, maybe a few years. Just hang in there, I know first hand its a real roller coaster, but if anything, you need to be strong for your dad! Good luck and let me know how it works out for your dad.