Consider a network of 3 computers, A, B, and C. I'm sitting at A, someone else is sitting at B, and we both would like to do things on C at the same time. That means I have a mouse cursor on C, the other person has another mouse cursor on C, and we are both doing different things at the same time. Same goes for the keyboard. Note that this requires A and B to log on the same session on C.
Is this possible? How? I have looked around but nothing seems to fit the bill.