Currently I have an NVidia Geforce 4 440 and have been told that it's not ideal, BUT it is in the supported graphics cards list, which my mum's computer's graphics card wasn't, so it's a start for skint me. Oh and edge smoothing has never appeared, ever. It's always greyed out. It has the latest drivers, which again I'm told are quite old. I considered using third-party drivers for it but my OH seemed wary about me doing that and he's a compy technician so I decided to trust him rather than the internet.
If I am not mistaken, the latest drivers do not suport the MX series. Try the 84.21 drivers.