[Wlug] sound module?

I got a new (old) machine, and I'm having problems getting the sound card working. The machine is a DELL Optiplex GX1, and the sound card is built into the mother board. I can't see anything on the motherboard that tells me what kind of sound card is there. I can't even find anything about the motherboard other than it's Dell. There are messages in my system log: Dec 15 22:21:31 newguy modprobe: modprobe: Can't locate module sound-slot-0 Dec 15 22:21:31 newguy modprobe: modprobe: Can't locate module sound-service-0-0 I get these messages at boot and whenever I put a music CD in the drive. Any ideas? TIA, Bill