i know windows xp supports 'net send' function which sends a pop-up message to other users.
to do this, i would go to 'run' -> cmd -> net send 'computer name' 'message'
(eg. net send xyz hello)
this is useful when you cannot be bothered to go to their rooms just to ask one question.

however when i tried to do this on knoppix 3.3, there was no such function.
(i totally forgot that xp isn't knoppix )

anyway the question is...
is there any function on knoppix that let's me send a message to another computer on network?