*rhk111, thanks very much for the map tips. I just came back from a trip to Hawaii where after driving around like a headless chicken who couldn't remember specific directions from google maps print outs, I bought a Nuvi 1300, knowing that it will come in handy in the Phils. The device worked like a charm and I never had to rely on printed maps ever again.

My questions (pls pardon the techno-idiocy in them) on installing Phil. maps are these:
  1. If I installed both Roadguide and OSM, how will I know which one is being displayed by the device? Can you switch from one to the other? When I was abroad, it was quite intuitive since I was only relying on the pre-installed maps.
  2. Will overwriting the "gmapsupp.img" file on the device affect any of the pre-installed maps?
Thanks for the help!