Getting a new video card will simplify things, for sure. If you are only going to use the receiver for sound, install the new video card, disable your onboard sound in the BIOS, set the Windows mixer for as many speakers as it will allow you to. Games will pass as many channels of sound as they are coded to to the receiver. If you want to play back DVDs, keep in mind that Media Player can only pass 2.0 PCM or 5.1 DD, not any DTS. If you want to play back Blu-ray and your receiver supports it, you will need a playback app that supports the passing of hi-res DD and DTS type soundtracks. Otherwise, you will only get regular DD tracks from your Blu-ray playback software. It's confusing, but not difficult to understand after you use such a system for a while.