Installing on-board sound card of Intel 845G

Hi guys,

I have installed RedHat Advanced Server 2.1 on an machine with Intel 845G board.

It has an on-board sound card.

It seems to be the sound card is not installed.

During the boot-up it give error messages;

May 20 16:35:24 localhost modprobe: modprobe: Can't locate module sound-slot-0
May 20 16:35:24 localhost modprobe: modprobe: Can't locate module sound-service-0-0
May 20 16:35:24 localhost modprobe: modprobe: Can't locate module sound-slot-0
May 20 16:35:24 localhost modprobe: modprobe: Can't locate module sound-service-0-0
May 20 16:35:25 localhost modprobe: modprobe: Can't locate module sound-slot-0
May 20 16:35:25 localhost modprobe: modprobe: Can't locate module sound-service-0-3

I tried sndconfig, it says;

The Intel Corporation|unknown device ?
? 8086:24c5 is not supported.

Please someone can help me to install the sound card ?

Thanks in advance.