Long time ago I had to create an account in Games for Windows LIVE to play some games. Since I have no XBox console, I haven't logged in it in a while and I forgot about that account. The thing is, email address it was registered to no longer exists, so I can't reset my password. Now, I can't play my games because they are still assigned to that old account. How can I find that account and merge it with a new one?
Some games were bought in a box (i.e. Gears of War), some via Steam (like DiRT 2). I have all serial codes, so I can proove that account belongs to me.