a plurality of remote computers;

at least one user interface unit coupled to a keyboard, video monitor and cursor control device, said user interface unit comprising circuitry for receiving and transmitting keyboard, cursor control device and video signals, wherein, said circuitry for receiving and transmitting video signals includes a tuning circuit containing a plurality of conditioning circuits for providing automatic signal tuning to the video components to uniformly amplify and condition the signals and to automatically tune the frequency of the received signals to achieve a desired video signal amplitude and frequency suitable for transmissions over extended lengths; and

a plurality of computer interface units, each of said computer interface units being a standalone unit that is co-located with and coupled to one of the plurality of remote computers in a one to one relationship, and wherein each of said computer interface units comprises circuitry for receiving and transmitting keyboard, cursor control device and video signals, and a signaling circuit for generating at least an audible or visual signal upon detection of a specific event transpiring at the remote computer, said signal being generated and broadcast at both the coupled computer interface unit and said remote computer coupled to said computer interface unit; and

a computer management unit which bi-directionally communicates with said user interface unit and each of said computer interface units;

wherein said computer interface unit bi-directionally communicates with said user interface unit over a network.