Realtek High Definition Audio Codecs are available for both XP and Vista at the link below. Warning as always Realtek servers are slow. Below is the list of changes.
Driver Package R1.89
Realtek HD Audio Driver support all of Realtek HD Audio Codec in Vista/WinXP/Win2000/Win2003 .
1. Vista WHQL Supporting: ALC882, ALC883, ALC885, ALC888, ALC889, ALC861VD, ALC660, ALC662, ALC260,
ALC262,ALC267, ALC268, ALC269
2. Windows 2000/XP WHQL Supporting: ALC880, ALC882, ALC883, ALC885, ALC888, ALC889, ALC861VC,
ALC861VD, ALC660, ALC662, ALC260, ALC262, ALC267,ALC268, ALC269
3. HDMI Device WHQL Support: ATI HDMI Devices
4. OS Supporting: Microsoft WindowsXP, Widnows2000, Vista x86/x64
5. Pack with Microsoft High Definition Audio UAAV1.0a(5013)
6. Add/Fix
Support "Event/Notification mode" under Vista.
Fix Vista GUI issue when video adapter's resolution is low.
Customizations.
Uninstallation language selected by OS system.
"Uninstall" word issue in Japanese language.
Source
Driver Package R1.89
Realtek HD Audio Driver support all of Realtek HD Audio Codec in Vista/WinXP/Win2000/Win2003 .
1. Vista WHQL Supporting: ALC882, ALC883, ALC885, ALC888, ALC889, ALC861VD, ALC660, ALC662, ALC260,
ALC262,ALC267, ALC268, ALC269
2. Windows 2000/XP WHQL Supporting: ALC880, ALC882, ALC883, ALC885, ALC888, ALC889, ALC861VC,
ALC861VD, ALC660, ALC662, ALC260, ALC262, ALC267,ALC268, ALC269
3. HDMI Device WHQL Support: ATI HDMI Devices
4. OS Supporting: Microsoft WindowsXP, Widnows2000, Vista x86/x64
5. Pack with Microsoft High Definition Audio UAAV1.0a(5013)
6. Add/Fix
Support "Event/Notification mode" under Vista.
Fix Vista GUI issue when video adapter's resolution is low.
Customizations.
Uninstallation language selected by OS system.
"Uninstall" word issue in Japanese language.
Source