VIA Tech has issued new, updated set of VIA Hyperion Pro drivers. You can download the official VIA Hyperion Pro drivers version 5.10a from here. You're going to find the release notes here, and according VIA this page contains important information:

INF V2.80A
AGP V4.60A
V-RAID V5.30C and RAID Tools v5.30
PATA/SATA IDE Driver V1.40A

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, K8M890, K8N800, K8N890, K8T890, K8T890Pro, K8T900
P4 chipsets: P4X400, P4X400A, PT800, PT880, PM800, PN800, PM880, PN880, PT880Pro, PT894, P4M800/Pro/CE, P4M900, PT890
C Series Chipsets: CN700, CN400, CLE266, CX700, VN800