driver installation problem

I downloaded a zip driver file into a folder on my hdd. When I open the zip file the next folder says winxp. I open this one and the new folder says drv. When I open this folder there are files, dll etc, but nothing for me to open to install the driver.

I have tried installing this driver from within device manager; clicked on problem device and followed all steps to try to get this driver to install. No luck no matter which way I go about it.

Your thoughts regarding this problem would be gratefully appreciated!!

Regards
Greg

ps. the driver is for onboard sound