Audio driver installation problem

After installing WIN7(ULTIMATE) in my system Icant install my audio driver for REALTEK .when I am changing OS to XP there is no such issues.even I used the latest versin of driver sound is not clear.

Have you tried to go to Realtek site and find your driver there.Some people are having problems with Audio after installing Win 7

http://www.realtek.com.tw/

You may also want to try the next to newest drivers they may work better.