Hello there, usually the Driver Disks that comes with video card are not updated drivers, since you're using a Nvidia based Video Card, i'd recommend you to download the latest driver, 260.99
Go to Drivers - Download NVIDIA Drivers
Select your Video Card, OS and download it from there.
EDIT: if you search for Nvidia 8 Series, there will not be any drivers available for Windows 7, i guess is some kind of bug on the website, just search for another model of video card. I.E.: 9800GT, later on the download it will say which models are compatible with that driver and you'll see the GeForce 8 Series in it, including your 8800GT, but don't download the GeForce 500 Series drivers cause those only work for GTX 580/570
Here's a Direct Link for the 260.99 Drivers: http://www.nvidia.com/object/win7-wi...ql-driver.html