I had my Radeon 9700 Pro running DirectX games at 1920x1200 via a single DVI connection with my Samsung 240T LCD display. 1920x1200 @ 52 Hz. I recently bought a new AGP GeForce 6800 GT and I can get my desktop resolution to display at 1920x1200 but I cannot get any D3D or OpenGL (Doom 3) games to render at 1920x1200. Doom 3 won't even run at 1600x1200. Is this a limitation of nVIDIA cards or drivers? Or is there something extra I need to do convince 1920x1200 @ 52 Hz is a valid setting for 3D apps? Thanks.