Lost all sound

I'm running SuSE 9.0 with Ximian Desktop 2 with a p4 2.4G on a Microstar MS-6533 motherboard with on-board Realtek AC97 soundchip. My sound did work just yesterday but I rebooted once (so that I could print something with windows), and ever since I get a message on startup that says "/dev/mixer has no (something or other) or pcm channels" (quotation marks mine). When I go into YaST and try to configure the generic card that it shows, I cannot even test my sound as there is nothing there. The test button is there but no "other channels" to modify. How can I restart this? Thanks Jack