I have the GO2535M unit. I am able to connect to MyTomTom and update my device. My problem is I cannot figure out how to copy POI files to my TomTom. I have a desktop running Windows 7. When I plug in the USB cable, I hear windows acknowledge new device although I do not see a Windows Explorer screen showing files. When I open Windows Explorer, I do not see a new device. When I click on Devices and Printers, I see TomTom listed as a network adapter. Any suggestions as to how I can copy my POI files to my TomTom?