Hey, I just got back from school and I am taking my car down south with me for a while. I have my Garmin StreetPilot 2610, but unfortunately I'm missing the first installation disc and I dont even know if the app works on Mac OS X. Is there any app out there that can download maps and upload them onto my gps for a reasonable if not free price? If I go through Garmin and get the new City Navigator its $140 which is not worth it IMOP.