Give the Eovia software renderer a try as opposed to OpenGL. While you certainly shouldn't be having a problem with a 6800GT, depending on the drivers, you might be seeing an OpenGL issue. The reason I say this is because I had similar problems with a 6800GT. I also saw problems such as all of my models disappearing, everything in the object tree disappearing, all menus disappearing, etc. I resolved that by switching to the Eovia software renderer. I plan on trying updated drivers soon to see if that will allow me to move back to OpenGL. One other note. I had AA enabled in OpenGL and have not tried OpenGL without AA. I'll have to give that a shot since Poser 6 works perfectly fine on the same machine, and it uses a real-time OpenGL renderer as well. Jim