Logged into my Steam account to download Alien Swarm today and got presented with a pop-up saying Steam is dropping Windows 2k support soon. Has anyone tested Steam in a WinXP bottle? If it works, do we have to reinstall in a XP bottle? I'd rather just change the bottle to XP or copy the Steam directory/folder to one of my XP bottles then do a fresh reinstall and re-download all my games.