Picked up a copy of Fallout 3 used, turns out when I tried to hook Games for Windows Live into it the Live key had already been used. I read the rules and I know it prohibits CD keys, but this isn't exactly a CD key. So if anyone has a spare one (it can be from ANY game with GFWL), maybe you don't like GFWL or whatever, I'll gladly pay a few dollars or maybe you'll just hook me up out of the kindness of your heart. 
-expense
-expense