Originally Posted by Atomic Rooster
In many cases, you're pretty much stuck. Especially if it's a laptop. A lot of the newer lappies are built with components designed only with Vista compatible drivers.
You could do a search for all the separate components in your computer and see if there are drivers available for each piece from their respective manufacturer.
Go to each components website and download the appropriate drivers, they should have them. Mine is an HP and they have drivers from xp on up to vista ultimate on the website.