The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry. It has the options to copy the key to clipboard, save it to a text file, or print it for safekeeping. It works on Windows 95, 98, ME, 2000, XP, Server 2003, Windows Vista, Office XP, Office 2003, and Office 2007.

Changelog:
What's been added in Beta 3?
# Windows Vista x64 Support
# Always On Top Option
# Updated CFG file

Program Information Category: Tools and Utilities Type: Free Version: 2.0 Beta 3 Size: 343KB Works on: Windows Product page: here