If I resell my copy of Fallout 3, will the keycode work on someone else's Windows Live Account? If not, is there a way around this?

No, don't think so.

So, you can't resell your copy of Fallout? I think that's not true. Bump.

You can resell it, but the LIVE code can only be used once. It's now tied permanantly to your account.

Whoever purchases it, can play the game, but they cannot use the LIVE features.