Solid. Although KOTOR disappointed me. For some reason, the graphics are horrible on my machine (I loved the game on Xbox). Hopefully you have better luck. Maybe there is a graphics mod? I haven't looked into it.
I played KOTOR for about an hour, and couldn't keep playing the game in it's current state. All the models were stretched because of no widescreen support, and was having issues with the character not moving.
There is a mod for widescreen, but technically it's against Steams policy being you have to download a no-cd version of the game for it to even work. The version you get with steam is restricted or something.