The 3.3 is referring to the voltage. Older "AGP 2X" cards aren't compatible with newer motherboards. If you saw AGP 8X referenced then you're good to go with the newer cards. That video card is the same model I have. For a driver to pass Windows logo quality testing standards, or whatever they call it, it's a big hassle for the hardware manufacturer to do that and the WHQL certified driver is out of date. nVidia based cards are very good, though, and you should be able to install the card and head out to
www.nvidia.com to download the latest drivers for it. Windows will probably bark at you, but just let the driver install and you should be sailing smooth.
Let me know if you have any problems getting that to work..