Hi guys ,
When I was in Redhat 9 , Mandrake 9 , the sound worked fine , but when I installed Debian , Slackware9 , it didnot work !!!!!
Iam now in Slackware9 and I hope you help me making my sound work ....
here is what lspci gave me :-

# lspci
00:00.0 Host bridge: Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge (rev 03)
00:01.0 PCI bridge: Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge (rev 03)
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 12)
00:1f.0 ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 12)
00:1f.1 IDE interface: Intel Corp. 82801BA IDE U100 (rev 12)
00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #1) (rev 12)
00:1f.3 SMBus: Intel Corp. 82801BA/BAM SMBus (rev 12)
00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 12)
00:1f.5 Multimedia audio controller: Intel Corp. 82801BA/BAM AC'97 Audio (rev 12)
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] SiS300/305 PCI/AGP VGA Display Adapter (rev 90)
#

In both debian and slack, you'll have to configure them manually. Look through /lib/modules/`uname -r`/kernel/drivers/sound/ and see if you can get a modules to load. I can't seem to find out what the modules is called even though I do know it's supported by the kernel.