I don't have XFire. For some reason, signing into Live worked on one computer (Vista) but not my other one (Windows 7). But the game is installed, I just can't get past the Live sign in. I get stuck at the menu where it says "press any key to continue." I've tried typing in my account and password several times, but it always fails.
[Edited on 04.15.2010 1:08 AM PDT]