Hey, I toyed with [b]gluLookAt()[/b] for all of five minutes and then implemented it into my game engine. All of my problems are now fixed! The game runs AWESOME in debug on my machine, but OpenGL seems to crash the living crap out of my 3dfx card's OpenGL driver. I have found this problem to be a clipping problem. I have been all through the OpenGL Red Book, and they explain nothing about clipping in there, other than how to setup six extra clipping planes, relative to the camera, not screen. How can I write a clipping routine for my engine that will clip just the edges of the window it's running in? If I can get this done I can research collision detection and then release an actual playable demo! So, does anybody know how to clip to a window, preferably without using much GPU/CPU power so it will render faster once texturing is finished? Thanks in advance for the help.