This morning I came accross a very useful tool for system administrators or for some one who is looking to rebuild their system. It is called DriverGrabber. DriverGrabber helps copy all third party drivers from your system into a “Drivers” subfolder where the EXE is located. This comes in useful if you need to reinstall Windows but have misplaced the original driver discs.
Download it free from http://www.majorgeeks.com/DriverGrabber_d5596.html. Just UnZip and run the EXE
Always check for the latest version here before download. To download it from Siginet Software, you might have to register on their forums.
UPDATE: Another tool by Dave Hope which does the same, but allows you to choose which driver you want to backup.
This can be downloaded here