Unable to keep OpenGL setting

[sdhil]

I am running on an Intel 850 chipset. I have just bought a ATI Radeon 9600xt 128MB video card. Now when i go under display settings to change the 3D setting from direct3D to OpenGL it will let me pick the option,but then when i close down that menu and come back to it, Direct3D is highlighted again instead of OpenGL. Any suggestions

You seem to missunderstood the concept behind this. Its just a view, its like when you open the "Display properties" it always open with the "Background" tab and not the tab you had active when you closed the dialog.