AFAIK, no. Maybe a joystick will work, but I tend to doubt it.
But you're right - the keyboard/mouse controls for Kotor are a bit cumbersome. Took me forever to get used to them. And once I did, my NWN playing got mangled.

Keep at it and eventually you'll get the hang of it. FWIW, I tend to stick to keyboard control for movement (W to move forward, A and D to turn the camera) and the mouse just for activating things.