Forum:Fallout 3 downloadable content

Hi, I'm new to the forums. I needed some help with the Game of the Year edition for F3. My computer is running on Vista, and it can run the game just fine, but for some reason, whenever I'm signed into Games for Windows Live, I can't access any of the DLC's. It'll just say "New Content Available" under Downloads. Is there any way you guys can help? I've already reinstalled it, and that was painful enough, but it didn't seem to do the trick. I'd really appreciate any help you guys could give me.