I run my desktop (and other things (including QIII with backbuffer and 32 bit color with Z and Alpha) where possible) in 1600x1200 mode, but DX8.1 seems not to want to use 1600 x 1200 (ColorDepth A8R8G8B8, 1 Backbuffer, No Z). When I look through the DXCapsViewer, 1600 x 1200 is NOT on the list of display modes. My monitor says it doesn''t support 1600 x 1200 mode, so under display properties (Settings, Advanced, Monitor), I have to deselect "Hide modes that the monitor cannot display". System Details: (Hercules Kyro II (64MB). Windows XP. Visual C++ 6.0. Mitsubishi DiamondScan 17HX Monitor. DX8.1 SDK) Is there any way to force DirectX to try a screen mode? Is it likely my monitor (and not the card) is preventing DX from using the mode? Thank for all help Simon Hill