C600 Dell Laptop with FC6 (New Install)

My sound card (Maestro3) isn't working. lspci lists the card, but when I use the auto detect tool, it doesn't find it. It was working fine with FC5, so I'm a bit puzzled. I searched the web and didn't find anything useful. I saw one reference on the web to buying another sound card (not productive) and another about modifying modprobe.conf although they didn't say how. Any clue would be helpful. Thanks in advance. PS. I'm new at this (LINUX), so more is better.