Since you had Xbox LIVE, four Downloadable content packs for Fallout 3 have come out. Operation: Anchorage, The Pitt, Broken Steel, and Point Lookout, with one, Mothership Zeta, still to come. If you don't want to get Xbox LIVE again to buy these packs, Operation: Anchorage and The Pitt are currently on a disk, and you should be able to pick up the DLC packs at a Gamestop or something. Also, Broken Steel and Point Lookout will come out on a disk in late August, but Mothership Zeta will only be online or, if you don't mind blowing 60 bucks, trade in your Fallout 3 and buy Fallout 3: Game of the Year edition when it comes out in October. It will cost 60 bucks and come with all five DLCs.
Wanna listen to me rant about stuff? I started a blog!
https://theloonybinblog.wordpress.com/