Vista - Need video driver help

I have the BFG 6800 GT OC and i have recently started using the windows vista
beta. The default drivers run most things ok but when it comes to games i
cant run any games in full screen without it messing up all the graphics.

I have Dled and tried to install 88.61_forceware_vista_x64_international.exe
from the nvidia site but it either does not support my card or does not
install correctly. When i install them the AERO interface stops working, none
of the video on any of my media players works and games wont even run at all.
And there is no nvidia control panel.

So i end up having to role back to the basic windows drivers every time.
However i do subscribe to a couple games that i have to run in full screen
like City of hero's and lineage 2 and i have not been able to play them on my
good computer since i upgraded my OS. I was wondering if you could provide me
with a source of drivers that may be able to help me with this problem or
maybe some solutions.

thanks for your time,
Frank M. Roberts