Ahhh...Its all becoming clear. Thank you.
So I need two apps and a GPS receiver (and a paedometer!!). How do I choose a GPS receiver? What resources are there for me to make a decision?
http://www.pocketpcmag.com and
http://www.pocketgpsworld.com both have some reviews. Are there any other sites? TomTom 5 is packaged with a new GPS receiver - is there any opinion on its performance?