tv-card configuration in Suse 9.1

Hi all, Yesterday I did a clean install of Suse 9.1. My tv-card (Pinnacle PCTV) did get recognized properly and I could watch television on my pc. The problem I had was that I didn't have any sound. I tried different sound settings from the configuration panel in kdetv, but it wouldn't work. This morning when I turned on my computer I couldn't watch tv anymore. The appropriate device (bt878) was no longer in the list under "Devices" in kdetv. I removed the card from the configuration center and added it again. When I tried to scan for channels I got an error message saying that /dev/video0 doesn't exist. How can I fix it and how do I get sound? Kind regards, Bert Meersma