> I have a serious problem with the sound, I
> can not listen nothing and I try to resolve
> the problem , my version of linux is RedHat
> 9.0, please if anyone know how I can repair
> this damage, I will be pleasured with you
> thanks

Strange. There shouldn't be any problem with sound in RedHat.
First you need to detect your soundcard. Go to System Settings/Soundcard detection for this.
Then you need to adjust the sound volume. For this you should go to Sound & Video/Volume Control.

Hope this helps.

Sincerely,
Cacarulo

PS: And don't forget to turn your speakers on first!