KotOR 1 or 2?
I don't recommend the one for KotOR 2 anymore because it requires a cracked .exe and there isn't one available that's been properly patched to 1.0b. Even though the crack that's floating around claims to be version 1.0b, it isn't, so you'll have to give up a lot of the fixes in the latest patch.
The KotOR 1 version can be found on the Widescreen Gaming Forum.
"Mind your wants, 'cause someone wants your mind."