bpmpbp, You can plug your Garmin Nuvi 760 into your PC and load the tracks directly to and from OziExplorer. There is no need to convert them.
I have tried various configuration setings with the USB setup in ozi but cant seem to get the two to talk to each other.I get an error of unable to locate com port,or to that effect. I have changed the com port number but it doesn't seem to help. Is there a step I am missing?