As a total newb I have to say I found this very useful for my Nuvi! I got it pretty much all straight within an hour! Thanks for a very informative tutorial.
If it makes any difference or anyone is interested I set the whole thing up using my 760 and Apple Macbook and everything runs just fine using Parallels.
The only thing I didn't know was how to "click" on the green signal bars to get to the 'coordinates screen'. On my unit at least, one needs to 'click and hold' for a couple seconds for that screen to appear.
AND: A quick request for help....
On a side note, I have created some zip files of caches from geocaching.com for planned routes in the USA this Summer (I am located in the UK) but these do not feature in my Custom POI's list when uploaded - only those that I loaded in the tutorial appear (those within x miles radius of my home, x no. of queries)?
May I assume that these will not be available unless I switch to the USA maps or am I missing something? I hope this isn't too OT.....
Thanks again for posting the step-by-step!