It is located on an official Novell/SuSE repository. If openSUSE-10.3 was installed correctly, this should have been setup during your install.

Please read the concepts page, especially this section (and look at the reference URLs - thats important !! ).
http://en.opensuse.org/Concepts#Software_P...gers_.28SPMs.29

If you have any questions after that, please post for help.

Note you don't need to update your kernel to get your sound to work, if you use the zypper commands I provided. I assume that is clear? If not, then please read re-read my posts.

Good luck!