Keyboard not working in XP

I've got XP on my Mac Pro through boot camp, been using it for like 6 months with no problems. I had to pull out all the cords and unplug it while I was moving stuff around. When I plugged all the USB devices and everything back in and booted up, it keeps trying to install the keyboard and says it can't. Not really sure why it would need to install anything since I've already been using all of this stuff without problems before. Anyone ever experience this problem or know anything about it?