All right I bought Arkham City off steam with all the DLC. Problem is I started a new game with gcox99@hotmail. (With no com on the end, so not a valid email). I played through and could NOT get the DLC to work. Apparently I need a valid email.. and gcox99@hotmail. is not one. So I can't use the DLC. I tried using firstname.lastname@example.org.. but now I have two live accounts. And I don't want to restart another game! Can anyone give me some advice!