you may want to check out the Asus website for other drivers in the future.
but the server hosting the English version seems to be busy all the time.
I got you the driver from the Taiwanese site
the download page, you probably won't understand a word there, but just for your ref.
http://www.asus.com.tw/support/down...-X&Type=Drivers
the driver:
http://www.asuscom.de/pub/ASUS/misc...80/WDM_3663.zip
translation of description:
SoundMAX, a combined sounds driver 5.12.01.5.12.01.3663 WHQL, for OS Windows 98SE, ME, 2000, XP.
hope this works out for you.