Re:They hire (Score 1)

For a wonderful Palm app that already does this exact thing, check out http://www.mapopolis.com. Relatively small maps (from NavTech I think) and an app that works with a GPS to plot your place on the map, move the map, and can plot directions between endpoints. Just used it last week with a bluetooth gps unit in new york city - it saved me several times as I would make wrong turns and could figure out how to get back on course.