Vista Tutorial - SigmaTel in Vista - x64

Hi,

I have a sony vaio VGC-RB64G hardware driver sound problem in VIsta since i
installed it, my problem is having my built sound SigmaTel on the Intel 945
Board not configured, i have tried the following mass solutions:
- Checking & Downloading the drivers from Sony which only support 32bit
which doesnt work
- Checking Intel drivers which doesnt work
- Checking other (might be) compatible drivers from SigmaTel C-MAjor or 97
which didint work
- I treid many solutions of uninstalling the device and deleting the drivers
, didnt help

I need your help please if anyone have had such problem, Widows Vista
without sound is like watching a movie with no sound.

Im desperate for a working solution please!!! my last hope was coming to
Microsoft and reporting the error,

Remarks:
1. Vista reconizes the sound as High Definition Audio on ... bus and
attempts to install the driver online but fails as "Cannot install the driver"
2. The sound card is working perfect in Windows XP
3. Vista Update and reporting problem didnt fix the problem
4. On clicking on the device in the errors tab it says Error 13

Help is appreciated,

Thanks,
Teri