Recover your Software Installation Keys for free

Try a free utility called Magic Jelly Bean.  This neat tool will search your registry for the software installation serial numbers you used to install many of the most popular programs on your computer.  Why do you need this?  Well, when you buy a new computer and need those keys to install it on your second computer, so many of you have no idea where you put the paperwork that contains that information.  Additionally, if you decide to reinstall your current computer (ie. because of a virus infection), you will need that information.  Heck, it's free.  One note, it does not recover Windows 7 or Office 2010 keys as of yet.