Drivers for Vista are marked as V3 (Vista 32-bit) or V6 (Vista 64-bit).
If Vista drivers are not found for your system, it probably means that the hardware is natively supported by Vista and drivers are not needed.
There is also a folder off the root of your hard drive called "Backup" that contains all drivers and software used when your system was built. If you ever need to re-install the Vista operating system, you should make a copy of this backup folder to make the reinstall easier.
If you have questions, don't hesitate to contact tech support.