Here is the VNV Viewer connetion options from the manual:
If you configure the conection on the machine itself, there is a separate option to be able to enter the port number, and not the Display. Is there an option to set the port in the ini file? Can it be done by the following:
i.e appending the port to the IP address?
Also, is there a reconect option if the connection is lost? There is on other conections.