Office XP Update: Service Pack 1 (SP-1) provides the latest updates to Office XP. SP-1 contains significant security enhancements and stability and performance improvements.
This is a free program that will automatically find, and decrypt, the product key to your older version of Office. • Note: Most will find the product key to any of these older versions of Office, but I've found Keyfinder Thing to be the most consistent. Plus, it's very easy to use, easier than some of the others in the list I just linked to. • Open the you just downloaded and then run the file called KeyFinderThing.exe (it's the only one in the archive) to start the installation. • Walk through the installation, clicking Next when necessary and accepting the license agreement when asked. Also be sure to choose Custom installation (advanced) if you're given the option, deselecting all of the extra, unnecessary stuff that comes alongside Keyfinder Thing.
• Choose to start Keyfinder Thing once the installation is done and then accept any confirmation prompts that might pop up asking if you're sure you want to launch the program. • Wait while Keyfinder Thing scans the registry, locates the product key for your version of Microsoft Office, and then shows those keys to you.