Hmm...why didn't I think of that, there's another XP machine not 5 feet from me. Doh!
Either way, I got it sorted out. All the fonts are in the i386 folder. They are compressed as FILENAME.TT_
I just extracted them and reinstalled them. Although copying them from the other machine over the network would have been quicker. Leave it to me to think of the non-obvious (i.e hard) way of doing it.