Microsoft Office requires a product key to activate and use the software beyond a 60-day trial version. Product keys are assigned to each individual product and cannot be modified or used twice for different products; for example, you could not use the same product key for one Microsoft Office product with another product. Product keys are stored in the registry of the computer, where data is raw and unreadable. If Microsoft Office is reinstalled and the original product key is not available, it may be necessary to extract it from the registry.
Open the Magical Jelly Bean website. Read through the information on the website and ensure you are satisfied with downloading the software. Scroll to the bottom of the page and select "Download ZIP (340kb)" or "Download Installer (991kb)."
Save the software to the desktop. Follow the onscreen instructions to install the software on your computer.
Start the keyfinder by double-clicking on the "Magical Jelly Bean Keyfinder" icon on the desktop (or where you chose to save the software). Select your version of Microsoft Office from the right-hand window pane. The software should now show your product key.
Click on the "Start" menu on your computer and select "Run." Type in "regedit" and press the "Enter" key.
Locate "HKEY_LOCAL_MACHINE \Software\Microsoft\Office\12.0\Registration" in the right-hand window pane of the Registry Editor. Select "HKEY_LOCAL_MACHINE \Software\Microsoft\Office\12.0\Registration" and double-click on the "DigitalProductID" key. This will display an encoded version of the product key; locate 15 sets of two digit numbers, highlight and select "copy."
Go to the Windows XP Key Decrypter site. Right-click on the text box on the website and select "paste." Click "decrypt code" to view the product key for your Microsoft Office version.