Microsoft Choice Guard

For those of you who do not wish this “choice” on your system, and have found it hard to uninstall simply download and install revo uninstaller a great freeware program that not only uninstalls many stubborn programs, but also conducts a search of the registry so that you may choose to uninstall these as well. Any left over files on your computer which are associated with the program will also be found and will provide you with the option of deleting them.

http://www.revouninstaller.com/