I have the Go 630 app. 8.351 V855.2884. I still have a prolem understanding and manipulating the numerous files found on the J drive in my SDHC card and the K drive of the internal memory. What file(s) icon is just strictly the maps? In my case I just want to keep the SDHC for the (in my case) the North America maps. When I open the SDHC or Internal folder in "My Computer" I see a number of files North America in both the J and K drive. What is the actual downloaded North America called and since I seem to have a number of them on both drives which is the actual 2 GB map? When I do find it can I just drag it to the SDHC and drag everything else to the internal? Some quidance would be appreciated. Thanks !