There are three most likely because there are three controllers on the motherboard.

You still need to download an updated driver first, and from perusing nVidia's download site, there's not enough information on that screen for me to immediately figure out what you need to download.

However, assuming that it's an nForce 9-, 7-, or 6-series, here are links to the Vista32 drivers and the Vista64 drivers.

If anything goes wrong, you should still be able to boot into safe mode. Vista does still have a safe mode, doesn't it?