Well, I downloaded the 10 files that compised the :

City Navigator North America NT 2013.40 Unlocked IMG
CN N. America 2013.40 Unlocked IMG

After unzipping, there is a file: gmapsupp.img that's roughly 1.926gb. So, I plan to run it straight from the sd card that'll arrive tomorrow.

The reason is that I'm a little confused as to what the unlocking is for. I thought I downloaded the unlocked version that I'd just plop on the card, and toss it in the gps. I guess I need the card to really test it, but I'm just curious if you can explain beforehand.

Thanks