Ever since I upgraded to 21.xx Detonator 4 drivers (from 12.xx) for my Geforce 2 GTS Pro 64DDR, I lost the overlay controls. I only had desktop color controls but not overlay controls. I then found RivaTuner (tuner257.zip) at www.3dchipset.com This gave me overlay controls and other tweaks. Other utilities found there are great also (Nvmax, GTU, etc.). They also have beta drivers (for ATI also), benchmarks, articles, etc. I recommend this site along with RivaTuner to better tweak your Geforce HTPC movie images.