Re, the graphics, if you go into System Profiler and look up the graphics card, what do you get for Core Image and Quartz Extreme? If you get Hardware Accelerated and Supported respectively then you don't need to do anything further with your graphics (as I suspect will be the case). I have a 9800GT card and it runs just fine without installing any new kext's, I simply need to add the string to the EFI section.

Sorry, I don't know about the wireless. In my case I knew that the wireless card I had was not supported, but the built in wired was so I went out and bought a pair of Devolo Home Plug wired network points