Hi and thanks for the membership. I am trying to learn more functions on my old Montana 650 than just the tracking feature I have been using. To start my education I downloaded and installed Basecamp. Don't know what to do with it but it's installed. :) I'm pretty sure I have an equipment issue though. The gps appears to work properly on just the batteries but the moment I plug in the data cord to my desktop computer, the gps's display immediately turns dark and the Montana logo appears as well as the USB symbol. Here it will stay, locked forever and not obeying the power button until I unplug it and remove and reinstall the batteries. This must be a malfunction, I assume. Any ideas on what I ought to do? Thanks