When you install a new Plug & Play compatible device, Windows 7 checks the driver store first to see if an appropriate driver is available. If yes, installation proceeds immediately & automatically.

I'm reinstalling Windows 7 on my Mom's old machine, which has a Asus M2A-VM motherboard in it. The chipset is a <gasp> ATI SB600. I want to install the latest chipset drivers, but it looks like AMD ...