ok so i downloaded the Arizona topo on to my flash drive and i opened up map source and it has no maps on it? shouldn't the az topo automatically download the maps to mapsource? or will i have to manually do it? is that hard?
You need to run the .exe file you downloaded. That mapset is self-installing and makes the necessary changes so MapSource and 'see' the mapset. Also see:
http://www.gpsfiledepot.com/tutorials/how-to-load-maps-on-my-garmin-gps-unit/
edit:fixed link
thanks i think i got it now ;D