sound is gone, where should I look to get my sound back working?

[Søren Christensen <severino@ulvedalen.dk>]

Hi,

some weeks ago my sound stopped working. I guess I installed som
audio-programs, that required certain sound-driver.

Where should I look, to find the error, and how do I setup the
sound-system?

I'm running Sarge with a 2.4 kernel, would it be an advantage to shift
to 2.6?

/severino