Thanks for your reply.
Well this is quite interesting. I had version 7.XXX?, and because it's a used one I went to restore factory settings. I connected it to my computer and updated, it now has version 8.010 installed as my maps. Very nice as I understand 8.15 doesn't offer a whole lot more for the simple use I intend to use it for. Either way, even with the old version it worked very nicely. I am however interested to know if I am correct in this, and if there are any suggestions that can be made to maximize it's potential.
I am looking again, and just to clarify, I don't have an SD card and am running the internal maps v710.1575. The screen that shows the battery level, satellites and coordinates also has a box that shows version 8.010. v8.15 available through TomTom for $80 USD requires a space of almost 150MB so I believe I may be running an inferior map. OK I just want a good map help me!! Do I already have it????