setting viewer port number

[Laxmikant Rashinkar]

Hi,

I have installed Real Vnc 4 on my systems.
I am able to change the port number in the server configuration.

But how do I change the port number in the viewer?
I have tried the following options in the "VNC Viewer: connection Details" 
dialog
box, but none of them work.

192.168.0.7:1234
192.168.0.7 1234

I dont see any other place in the viewer where I can define the port to be 
used.
Any feedback would be greatly appreciated.

regards
LK