Always uninstall the old version first, makes a mess of your desktop but
avoids other problems. Turn off AV software and security software if you
have it. Reboot before uninstall, reboot after and make the new install
before doing anything else, have the installer package already
downloaded and on your desktop so it's easy to find.
Video drivers will bite you if they get upset during install, especially
with the 64 bit version.
I suggest you always keep a copy of the installer package somewhere so
that next time around if a new version gives you trouble (and that does
happen) you have a nice clean way of going back just by repeating the
above but using the older package.
A lot of people have trouble with video drivers and it seems like trying
to overwrite the old ones can't always be done, then you end up with
half old half new and blue screen. It does work sometimes but then you
never quite know how safe you are

This is why you will be advised not
to let Windows Update do it for you, it's not because the drivers are
different, only the method can fall over...
Jack wrote:
> Thanks for the information but for some reason I can't install the new
> driver.
>
> If anyone can tell me why, I would appreciate knowing.
>
> My OS is Vista Ultimate 64 bit.. My video card is the NVIDIA GeForce
> 7900 cs...
>
> I accessed the download site and initiated the download site and selected
> RUN to automatically install the new driver..
>
> The driver I selected was Version 163.75 - dated November 6, 2007
> Windows Vista 64 bit, US English - 43.4 MB..
>
> The file is 163.75_forceware_winvista_64bit_English_whql.exe
>
> In the process of installing the following message popped up..
>
> "The contents of this file cannot be unpacked. The Executables you
> are attempting to run has been corrupted. Please obtain another copy
> of the file, verify its integrity and try again"
>
> I then re-downloaded the file to a folder and attempted to do a manual
> install and the same message popped up..
>
> Any suggestions? I tried contacting NVIDIA but so far no reply..
>
> Thanks..
>
>
>
> "Cal Bear '66" <xxx@xxx.org> wrote in message
> news:603A5695-114D-4878-BA2F-C41E4760C050@microsoft.com...
>> New nVidia WHQL Graphics Drivers ver. 163.75 6 Nov. 2007
>>
>> http://www.nvidia.com/Download/index.aspx?lang=en-us
>>
>>
>> I Bleed Blue and Gold
>> GO BEARS!
>>
>>
>>
>