I know this is frustrating. I didn't even install my motherboard drivers
. Have you just tried using Vista without the motherboard utilities? It works suprisingly well on my part. See if you can piece together the downloads you need. If your motherboard used RealTek drivers before for audio, go to their website and download the VIsta version. They have it up, I just checked. There are chipset drivers you can probably use for XP on Vista that may still work.