Forum:Problems with Windows Live

Ok, I am having some major issues with the Games for Windows client. I cannot get it to accept my credentials to log in, regardless of what I try. I can log ontpo they're website in the browser but it doesn't seem to have a section for buying and dling the expansions for Fallout 3. I am unable at this time to solve the issue myself so I turn to you o glorious internet...  Help me out here, what am I doing wrong