2. sorry I meant download off City navigator; I only want to download Bikely route tracks not the maps; I think Sergent Pluck did this with my event so it definitely works (although it doesn't show roadside tea stops )
Tracks (and Routes and Waypoints) are not stored on your memory card.
(They are in some newer Garmins, but not on the Etrex series)
They are stored in the unit's own memory, where magically they remain even when you change batteries.
Any maps you transfer into the unit are stored on the card, wiping in the process any maps already there.
There is also an option to log your daily recorded tracks onto the card, which I strongly recommend doing.
(Presumably pre-loaded City maps are on a read-only SD card (?) so neither of these might apply.)
Regarding Trip & Waypoint Manager, this is from Garmin's page here:
https://buy.garmin.com/shop/shop.do?pID=664&pvID=1951"You cannot use this product to load maps to your Garmin device."
It will however upload/download Tracks/Routes/Waypoints.
But you're getting the DVD City anyway, so T&WM is irrelevant (though its possible you do still have to install it first, then install City over it - not sure about that but you do need the USB driver anyway, off the CD). Garmin's software install is pretty flakey, I've found.