A new set of drivers the VIA Hyperion Pro drivers is available for download. VIA Hyperion Pro drivers are suitable for any VIA chipset - but they are particularly recommended for KT4## series, P4X4## series and newer, for example:

K7 chipsets: KT400, KT400A, KT600, KT880, KM400, KN400
K8 chipsets: K8T800, K8T800Pro, K8M800, K8N800, K8T890, K8T890Pro
P4 chipsets: P4X400, P4X400A, PT800, PT880, PM800, PM880, PT880Pro, PT894

Version 5.06A includes the following components:

INF V2.60A
AGP V4.50C
RAID V4.30H
IDE Filter V1.20D

Supported OS: Windows 2000, Windows XP, Windows 98, Windows XP 64-Bit, Windows ME, Windows 98SE, Windows NT, Windows Server 2003 x64

The complete release notes can be downloaded here.

Downloads the drivers here.