Looks like I found the answer to my own question here: http://support.apple.com/kb/HT4410# . I have the Macbook Pro from "early 2011" which does not support Windows XP. Well, at least it runs more or less all right! I just need to figure out how to get right-click to work on my trackpad. Does anyone know how to do that if all the fancy trackpad gestures are disabled?
No, actually...I guess I have the Macbook Pro from mid-2010 because I got mine right before the new ones with Thunderbolt I/O came out. So my computer should support XP. However my drivers are still corrupted, and I can't repair or reinstall Boot Camp. Does anyone know how to get the drivers working without reinstalling Windows?
At last I got it all to work. I had to go into the registry and delete all references to Apple software and drivers. Some of the entries were locked, and I had to change permissions to allow me to delete them, which was probably the reason the installer kept failing. I finally got Boot Camp 3.0 installed off the Snow Leopard DVD and then upgraded to 3.2. I had a hickup with the trackpad drivers which didn't work, but I found a fix online -- the drivers labeled "TouchPad" were banged out, and I had to switch them to Generic USB Human Interface and then back to Apple TrackPad drivers, which fixed the problem. Now everything is working beautifully with multi-gesture touch pad and keyboard extensions. Yay!!!!!