The 2009 version had added the feature of ‘shredding’ files, and a way of actually ‘bleaching’ selected files to avoid recovery from all but the most sophisticated computer forensics. The advantages of this are clear, protection from hackers and assured privacy if you decide to donate or recycle your computer. If you are looking for this kind of tool and you are still running XP or Vista, you may desire to find a copy of the program.
Other than that, it will run basically the same as the 2011 version; the graphical interface is only slightly different, and it has the same features and tools that one would expect to find in a program of this type. Like the newer one, it also makes logs for restoration of entries should they be deleted in error, and allows the user to customize their startup to minimize the time and memory required to get the machine up to speed at boot up.
Older Registry Mechanic for PC programs all perform the same function in their more basic design; the detection and repair of registry entries. Later versions are optimized for the newer operating systems, but since XP and Vista are still running on a significant number of computers, older versions of the software should work very well and you may be able to pick up a license from a private party at little to no cost.