Hi, since i'm using Vista x64 with 3DS Max 9 32 bit, i've got a problem with the viewports. Every time i move the camera or my cursor, the screen flashes and a lot of times it remains white after my movement. Is it because i'm using the 32 bit version on a 64 bit OS, or is it related to something else? I hope someone can make clear why i'm having this problem and how to solve it. Thanks & Regards, 3d Animation Studio India