One of our readers pointed us recently to a great little freeware program for scanning and locating driver updates for all of your PC Components. The drivers are even available for download directly from Device Doctor's servers so you don't have to hunt around for the updated file once the correct file has been identified.
Device Doctor also provides a version of their app that can fully run from a USB portable drive. Pretty cool stuff for techs and those on the road going from machine to machine.
The portable version is available for download here: http://www.devicedoctor.com/device-doctor-builds.php
Hat tip to Device Doctor for a great little app!