nuvi 500 question

I am wondering about my Nuvi 500 if it has what I am looking for, If I
load the US maps on my software ( Mapsource) from the GPS, I cannot seem
to get alot of roads that are off the main highways, is there something
that I don't understand, my buddy gets them all on his mapsource but he
has a cd called city Navigator, is this the reason I cannot get into a
more detailed mode off the off roads from some of the main roads. is
there some of detailed maps I can DL without purchasing them or do I
need to buy this cd to get more detailed, the software on my Nuvi 500
says us base maps loaded.

Chet

You only have the base map. To my knowledge Garmin doesn't have a program to
load the street maps from the GPS to Mapsource. There are ways suggested on
the net, Google for them , but I haven't tried. You can load them to
mapsource and the GPS when you purchase updates to load on the device
through the PC. Just make sure you select the advanced tab when going
through the download program.