U don't have to go on MSI site.AFAIK ur motherboard has a VIA chipset so i think u should go to the VIA site.
I have founf this & i think it might be helpful *www.viaarena.com/?PageID=2
This one too:
*drivers.softpedia.com/get/Other-DRIVERS-TOOLS/Others/Via-K8M800-Chipset-16944410-WHQL.shtml
Have fun Dude!