WinKeyFinder is a Small Program, which does the following tasks.
"Win keyfinder" retrieves your windows Xp, win 2000, windows me, 98, 2003 and .NET Product keys from the registry and display it for you.
Usually the keys are encoded and stored in the registry it decodes it and also allows You to change Windows XP, 2003, and .Net Product Keys just press of a button. It is simple and easy to use.
Tools and Utilities
Product page: here