Forgot about audio. My advice about audio over HDMI from a computer is to run in the other direction and avoid if at all possible. It sounds like a good idea, but it really isn't - and this goes for all OSes I've tried it on.
(Basically it works as long as you stay on regular 2-channel PCM, ie uncompressed stereo sound of CD quality, but as long as you start mixing up multichannel PCM, Dolby Digital, DTS, the various lossless multichannel audio formats and god knows what else for various sources, it just comes apart at the seams. The autodetection fails, you start trying to force the audio you want on either TV, receiver or computer, and eventually you're lost in space. Either settle for stereo sound with Dolby Pro Logic II over an analog or optical cable, or do all decoding on the computer and run multiple analog leads between the computer and receiver. The difference in audio quality is not worth the hassle.)