This page describes my experiences with getting Linux to run on the Asus A7V8X motherboard. I will probablt refer mostly to 2.6 drivers.
SATA - I have a dedicated page with my notes about the Promise SATA RAID controller on this motherboard.
ETHERNET - I don't have the gigabit ethernet card so I can't speak for it. The Fast Ethernet one is a Broadcom 440x (4401 in my case). The latest kernels support the controller (b44 driver). I use the module in the 2.6 kernels. Broadcom had also released some drivers, look for the BCM4401. There was some information on this page too.
SOUND - I have a Sound Blaster Live I use so I don't meddle with the integrated sound too much. The driver to load is snd-via82xx for alsa, I don't really know what the OSS driver is but probably something along the lines of via82xx. You can also refer to LinuxQuestions.org and their page on Asus A7V8X sound
USB 2.0 - I don't have any USB 2.0 (USB High-Speed) to test this with. My USB 1.1 (USB Full-Speed) devices work fine using the module usb-uhci. For 2.0 you'll need usb-ehci.
IEEE1394 - I don't have any devices to test this with. The correct drivers should be ohci1394 and ieee1394.