Hey, I had a bit of a problem with my GPS unit, and the map got removed. Fortunately, I had a backup of the map on my computer. It was not, however, the back-up feature. I just used the "Manage my XL" option to copy the map to my computer. So I just have a zip file of the map. Where do I need to put this in my unit to get it to recognize it? There are no folders named "map" or anything.