AC'97 sound card problem

[sc0ri0n <sc0ri0n comcast net>]

Hi,

I have a problem with my on-board Intel sound card. The full name is
something like ICH4 845G/GL Chipset AC'97 Audio Controller.

FC3 detects it fine. However, I do not hear sound. On this box I also
have Mandriva 2005 which detects the card too and play sound without any
issues.

Below is output of lsmod

$ lsmod |grep snd
snd_intel8x0           35329  2
snd_ac97_codec         73145  1 snd_intel8x0
snd_pcm_oss            55153  0
snd_mixer_oss          22465  2 snd_pcm_oss
snd_pcm                92741  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer              28741  1 snd_pcm
snd                    57765  8
snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore              13217  2 snd
snd_page_alloc         13765  2 snd_intel8x0,snd_pcm

How can I troubleshoot this?

TIA,
Adil