VIA has released new Hyperion Pro64 beta drivers
This driver is beta only. This package contains the drivers for Windows XP 64 and Windows Server 2003 64 bit only, supporting the components for K8T800, K8T800Pro and K8M800 including VT8237 South Bridge features as follows:Download
* VIA AC97 Audio driver for integrated controller
* Raid Combo driver v3.10, including support for VT8237, VT6410, VT6420 and VT6421 controllers
* Raid Tool v 4.04
Please note that this package does not contain the driver for the UniChromePro integrated graphics of the K8M800 chipset. Users will need to download the beta 64 bit drivers from here.