Games For Windows Live Is Coming To WinXP

Gamerscore blog site has word that upcoming PC games that will run on both Vista and Windows XP will also be able to support Games For Windows Live:

When the development team was working on Games for Windows -- LIVE, they focused on a single platform to ship the first iteration of online play, and that platform was Windows Vista. Now that Halo 2 and Shadowrun are out and available, the team has been able to go back and finalize the work done to make sure Games for Windows -- LIVE works on Windows XP. Which means that not only Gears of War will connect to LIVE on Windows XP, but so will the other games we announced that will support Games for Windows -- LIVE, like Universe at War from SEGA (which, incidentally, will also enable cross-platform play between Xbox 360 and Windows PCs).