VNC via Rs232

Hi !
Is there somebody who is able to connect a VNC session via serial cable ?
There is a hint on the VNC homepage that it is possible to configure that.
But how?
thanks joerg

This link also mentions a serial port but has more information.

http://members.rogers.com/michaeljcook/vnc/vnc.html

Thanks for your reply, but the link has no more information about my question.
He control on the end of the second PC(VNC_server) via serial cable other server.
That is not my problem.
I want to control a server via serial cable with an PC(VNC-Viewer).

regards joerg