I just put my new system together today amd 64 4000+ with a mach speed mk8-939a and I tried to use my old radeon 9600 xt it's an agp card and my board has a mgp slot (mach grapics port) well I can't see nothing my screen is black so I switch it out with my even older nvidia tnt64 and it works fine what gives? I downloaded the latest drivers for the ati but I get no display and it's got power because the fan is spinning on it. please help