Ok confirmed that. When I change it to DirectX I get no mouse. So not sure why your mouse isnt there in open GL. Have you tried to alt tab out and then back in? My ARCA game starts pushed way off to the right but as soon as I alt tab out and back in, it centers up.. Oh just another thing and I have no idea if it means anything. At the bottom with all the resolutions....should you not have a 1200x1600x85(?) entry?
I dunno, Im using vista64 so maybe that is part of the problem? I have tried all that you suggested and still no luck :(
It wont even start the game if I select directX, and when it gets to the selection menu the pointer is there, but the second I move the mouse it dissappears!