I'd expect that Windows 7 can find audio
drivers on its own. As for chipset drivers, I've actually looked at Asus' website and see none listed for Vista - just drivers for audio and RAID.
Unless you have any unknown or non-working devices listed in
Device Manager, you probably needn't worry about it at all.
EDIT: I found a
driver package at nVidia for the nForce 430/GeForce 6100 chipset that your motherboard uses. The latest available version is 15.49 dated October 2009.
http://www.nvidia.com/object/nforce_...bit_15.49.html