Anyone have any good suggestions for fixing a machine w/ a borked
windows installer? It's running xp, sp3. I've tried re-registering
msiexec in safe mode, tried installing a newer version, can't seem to
get this thing working right.

I really don't want to fdisk this thing, as it's a very custom mini pc
w/ no cd/dvd drive, some quite custom software w/ a bunch of custom
graphic stuff, and I don't have any drivers for this thing.

This is nothing our dept bought, but we end up getting stuck trying to
fix things on stuff like this, so any suggestions would be greatly