vnc in window mode ?

[Erez D]

i am looking for a way to open a window, and then later move it to another
computer (somthing like changing the display dynamically)

i know i can do it for a whole desktop with vnc
and in text mode via screen

how can i do it for a single window (without running every window on a
seperate display with multiple vncservers, one per window)


thanks,
erez.