Error Message: SSL error: wrong version number

I am trying to connect PGAdmin III (ver 1.4.1) to a sun system (SunOS
5.10) running postgresql 7.4.7.  The database is up and running.
I get the message:  Error connecting to the server: SSL error: wrong
version number.
I also am not sure what (if anything) to put in the Service field of
the Add Server window.

Does anyone have any idea how to fix this and connect to the database?

Thanks,
Ted