" I don't have a card reader (yet), but I assume you'd be able to see and copy the .gpx files from the card. "
Heres what I don't understand. My cell has the same type micro flash card as 60csx (motorola v635). If I connect my cell via USB to a comp the card is shown as a removbale drive without any reader in /MY COMPUTER/. It functions just like any other rewritable media then. WHy is the 60'csx card not showing when the unit is connected via usb is beoyond me. I actually think they made it 'ivisible' on purpose.