The PC version has real cut scenes with 3D models and voice acting (at least I think there is voice acting, but I know there are 3D model), the N64 version only has still images or sometimes semi animated 2D scenes (for example a still image of Xisor's face will go from straight faced to evil smile. Or a shot of IG-88 will have blinking lights) also in the N64 version all dialog and development is all written. Other than that I think the two versions are identical as far as gameplay goes.

Whatcha planning davey? A Shadows of the Empire movie? That would be pretty cool. But if that was the case I am not sure why you would want still scene from the N64.