VNC http://www.uk.research.att.com/vnc is free software that lets you operate remote machines. It displays the remote screen in a local windows or in full screen mode and sends your keyboard and mouse actions to the remote machine, regardless of the underlying operating system. The remote machine is called a VNC server and has to run VNC server software while vncviewer is a very small program that connects to VNC servers. Since the installation of the VNC server needs root or administrator previlege, VNC is commonly used to control your home machines.