Live is compatible with Windows Live Messenger 8.0 to 14.0 (2009) and can be installed on 32bit and 64bit versions of Windows XP to Windows 7. Installed more than 500 million times since 2001, when it started as a simple add-on for MSN Messenger 3, Messenger Plus! is guaranteed to improve your Messenger experience by leaps and bounds. You won't just get a couple of new options, what you'll get is a whole new dimension for the Windows Live Messenger software