ok 2 days ago i got fallout 3 goty from steam and today i finished the game and broken steal didnt started and the other dlc's havent started either how cam i make them work?

Well I've been having the same issue as you. You have to log in to your windows live account and enter that code steam gave you. This is the point I've gotten to though. When I'm logged into my windows live account I can't access any of my previous saves. In the FAQ it says to go to my games and move the files over, but I don't have anything in the my games folder. Assistance would be most appreciated.

never mind i fixed the problem i forgot to mark the dlc in the game launcher its work fine now