If you need to determine the product key of your machine, there's a useful utility you can use to do this. Magical Jelly Bean Keyfinder can retrieve product keys for all versions of Microsoft Windows and Microsoft Office. This can be a lifesaver if you need to rebuild a machine you're having problems with and you can't locate your product key. You can get Magical Jelly Bean Keyfinder from http://www.magicaljellybean.com/keyfinder.shtml.
Mitch Tulloch is lead author for the Windows Vista Resource Kit from Microsoft Press, which is THE book for IT pros who want to deploy, maintain and support Windows Vista in mid- and large-sized network environments. Mitch is also the author of Introducing Windows Server 2008, the first book from Microsoft Press about the exciting new server platform. For more information on these and other books written by Mitch, see www.mtit.com.