The biggest problem I have when I do this is I can never find the OEM sticker on the machine. If you have never seen one, these OEM stickers are required by Microsoft to be put on a machine when windows is installed at the factory - that way you will always have a serial number when you reload the machine. More often than not, the user tears it off or it is a white box special.
There is a great utility with a cool name - The Magic Jelly Bean Key Finder
It works on XP, and 2003. It will quickly find and display the current serial number for the system it is run on.
Just launch the application and it will instantly show you your serial number:

Now, my serial is blured out for obvious reasons.
Just another one of those apps to add to your toolbox
Download it from http://www.magicaljellybean.com/
Posted By: Steve Wiseman on Tuesday, April 11, 2006
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