Realtek ALC AC97 Series (ALC1xx 2xx 650) driver/application A3.36 for Win9x/W2K/XP/NT and 1.50 for Linux
Cmedia 8738 driver 6.42 for Win98SE/ME/W2K/XP found at MSI homepage
Realtek ALC AC97 Series are mainly used as OnBoard Audio on motherboards
CMedia 8738 is often used as OnBoard Sound as well as stand-alone PCI Soundcard

Realtek ALC AC97 Audio download page
http://www.realtek.com.tw/downloads/...&Software=True

CMedia 8738 6.42 for Win98SE
http://download.msi.com.tw/support/dvr_exe/cm45se.exe

CMedia 8738 6.42 for Win ME
http://download.msi.com.tw/support/dvr_exe/cm45me.exe

CMedia 8738 6.42 for Win 2000
http://download.msi.com.tw/support/dvr_exe/cm452k.exe

CMedia 8738 6.42 for Win XP
http://download.msi.com.tw/support/dvr_exe/cm45xp.exe