Typically at home when we install commercial software, that requires a product key, we will install the software and forget about keeping the product key information. This can present a very frustrating experience in the event you need to reinstall the software or move the software to another PC.
A solution to this situation is a software product (which is FREE) called Magical Jelly Bean Finder. Once installed, Magical Jelly Bean Finder has the capability of retrieving the product keys to over 300 different software products.
The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry. It also has a community-updated configuration file that retrieves product keys for many other applications. Another feature is the ability to retrieve product keys from unbootable Windows installations.