intel uaa sound driver

i've a notebook with centrino processor and intel UAA audio system (intel 915). so vista found the device, but i can't hear the sound....
where i can find a beta driver for intel UAA?
thanks

From the manufacturer of your notebook or Intels website. -- -- Andre Windows Connected | http://www.windowsconnected.com Extended64 | http://www.extended64.com Blog | http://www.extended64.com/blogs/andre http://spaces.msn.com/members/adacosta
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i've a notebook with centrino processor and intel UAA audio system (intel 915). so vista found the device, but i can't hear the sound....
where i can find a beta driver for intel UAA?
thanks