Comp hangs after Audio driver is installed-pls help

I ve been using realtek hd audio driver version 5.10.0.5211 published in January 2006.I got it from the motherboard cd that was provided to me..The sound manager does not contain options to change the configuration of the audio ports present at the back from 2 channel to 4 or 6 channel output.So i downloaded an upgraded version from the realtek site.But after installation of the audio driver when i play a audio file or a video file it plays for a few seconds and then the whole comp hangs.I ve tried downloading the driver from the Intel site as well but the problem persists.When i revert back to the one given to me with the mobo it works fine.
The configuration of my comp is given below.

Processor : Intel D820 - dual core processor 2* 2.80ghz
Motherboard: Intel D102GCC2
Ram : 512 mb
Video card : PC 6200 TC ( leadtek)

Have you installed the Microsoft's Universal Audio Architecture High Definition audio bus driver on the system before installing the updated drivers?

Audio Driver http://tinyurl.com/2u2s5z

Microsoft UAA http://tinyurl.com/2euk3s

Its still there..I ve installed univesal architecture

the problem still exists..Pls help ;(