I was never able to fix this problem with my 2000 installation but I was able to boot up if I had my w2000 disk in my cd-rom drive.
Despite deleting my partition and installing XP on the (presumably) clean drive I'm getting the same exact error when I try to boot up xp now. I've tried fixmbr from the recovery console but that didn't work.
Please advise as I'm really not able to understand why my drive is looking for a 2000 file now, despite the xp installation.