I recognize that Star field background. It came from the world creator CD that comes with 3DS MAX. Notice how the Stars seem to have a noticable curve? You are using the bit map as a 2D background. It was ment to be a 3D spherical background. Create a really big sphere, apply the pic to the object and make it double sided so you can see it on the inside. Trust me, it will look much better... slow down rendering time though.