MBSwapper is a utility that swaps mouse buttons. It is aimed at left-handed people and sys admins who acknowldege the fact that left-handed people are not right-handed. On public computers and shared accounts, especially if access to control panel is blocked, it would be nice to have a program such as this one. If you're left-handed and you agree, MBSwapper is portable so you can pack it on your usb stick.