There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read how to get help
I've had good luck with Turtle Beach and Sound Blaster products in Linux. Both are easy to find @ Best Buy, Wal-Mart etc. Avoid the X-Fi cards from SB though, the drivers seem to be hit and miss. I'm currently running a SB Audigy Platinum with no issues in Elyssa 64-bit, it even detected the firewire connection correctly.