I'm just using the defaults in cgminer and I downloaded the dependencies for it as well such as opencl-nvidia. I've already had it running fine in Windows for a while, but I would prefer to run it under Linux as I use Linux for my main stuff and Windows for gaming.
OK, are you getting around 112Mhs in Windoze?
If your building a dedicated mining machine I would get any AMD GPU as it would give you a higher hash rate and use less electricity. Otherwise I would just continue running in Windoze since it is working.
Good Luck,
Sam