Im also haveing the same problem but with KOTOR1 on Dantooine.
Im proberly going to seem like a dumb ass here but I cant find this ".ini" thing any were? How you ment to alter the files in them any way they dont seem to be in note pad format?
I cant seem to find any link's as well for down loading this ATI 4.11 driver's is there any outher options apart from these?