The program Ultra VNC allows you to use your mouse and keyboard to control the other PC remotely. It means that you can work on a remote computer, as if sitting in front of it, right from your current location.
VNC, the Remote Frame Buffer protocol (RFB), allows a desktop to be viewed and controlled remotely over the Internet. Must run a VNC server on the computer sharing the desktop; run a VNC client that will access the shared desktop.
UltraVNC sports several advanced features, making it unique among the various flavors of VNC. A special graphics mirror driver for ultrafast remote controlling, integration of Windows authentication, and various encryption plugins provide superior functionality.