Sound doesnt work on P4S800D

I have a P4S800D motherboard and the sound is integrated. Problem is that the sound doesnt work on linux :( . Please help.. Im using Mandrake 9.1
Thanks

You need to find out what audio chipset your mobo has. Open a terminal emulator and run the /sbin/lspci command. Then post the output here, please.

Thank you for replying...
I tried but i it said no such directory or something like that... I opened the directory sbin, but cant find any lspci in it... what do i do now? what's lspci? :(