we receive much help request by mail, and 80% of this request regards, how to connect gps antenna.
an user wrote:
I never get to the point where I can select the GPS port.

response is:
try to change com port, open start->settings->connection from your pda then choose bluetooth. now in com port tab you see your gps antenna, long click on it and choose modify. Now you can change com port.
this was the solution for many users.