I’ve just installed Windows XP on a Gateway GT5694 and finding the drivers wasn’t the easiest thing in the world. I’m posting the drivers that I used to install, including the SMBus, Wireless, Video, etc.
Be aware that some of these were direct from Gateway and are the Vista drivers which contain the XP drivers as well. A couple were direct from RealTek and from ATI.
If you have any trouble post a comment here, but the support will probably be limited. As long as you can get the netwwork drivers going, I can setup a remote support session and actually help you out.