Intel MB899 - Manual (Page 60)

DRIVER INSTALLATION
56 MB899 User’s Manual
AC97 Codec Audio Driver Installation
Follow the steps below to install the Realtek AC97 Codec Audio Drivers.
1. Insert the CD that comes with the motherboard. Click Intel Chipsets
and then Intel(R) I945GMChipset Drivers.
2. Click Realtek AC'97 Codec Audio Driver.
3. Click Finish to restart the computer and for changes to take effect. .