How To Control Desktops From One Master Computer & Screen

We have 8 machines that we need to control and image at our ghost station. The problem we have is the fact that our kvm switch has to be pressed every time we are configuring the next machine to join the multicast sessions of Norton Ghost.Is there any software that allows one master computer to have at least a 4-network desktop view of computers on a local network on one screen?For example, the program would be a big window that would house the other connected slave computers and display their desktop screen on the master computer within the window. It would do the same for the other three computers and you can navigate between them all by moving the mouse over it to gain it's focus and move to the next and gain its focus.