Did you see our forums?
Driver:


ASUS P5K Audio Driver/Application Downloads


Manufacturer: ASUS Brand:Motherboard Type: Model: P5K
Info:
Realtek ALC883 Audio Driver WHQL V5.10.0.5391 for Windows 2K/XP.
Category: Audio Date: 2007/05/10 Version:V5.10.0.5391 OS:WinXP