You are in an area outside of my knowledge. I'm guessing SP3 overwrote the file. It probably assumed certain things would be there but they aren't. They were removed by nlite. If you can get your hands on a real XP CD you could try doing a repair. If that doesn't work re-install XP with a unmodified CD. You may want to wait a while and see if somebody else posts to this thread with some better options.