I'm a complete novice with GPS units so don't laugh at some of my questions, I have a garmin 62s that I use with montana maps micro sd, my question is can I use that micro sd chip in the Tom Tom that i can mount on my wind shield or dash? I would love to have the bigger monitor screen to watch as we drive, or is there a monitor screen only that I can patch to from my 62s that will go on my dash, I don't want one that goes into my dash