The package performs most functions without registration, but uploading images to the GPS unit, and SaveAs are disabled. To obtain a licence, choose Help/Registration in GPS_COM, and note the PID number.
Then send an email stating your PID number, and your Name, to The Doc at firstname.lastname@example.org. You may obtain licence numbers for more than one system in this way. There is a charge which covers all support, further licences, and future upgrades.