I am headed to australia next week and was hoping hoping to use my new captivate for navigation directions. Will this be possible? I know GPS will need to be enabled, but will i alsop need international data? i wasnt planning on doing that, using it only as a navigation device if possible. any direction or answers would be very helpful. ps. I did some searching but the only thing i can really find on the board is info about using GPS navigation on verizon phones, which doesnt apply since they dont roam very well period.