Hello all. Yesterday at a local garage sale I bought a used TomTom One 2nd Edition. It came with the unit the suction mount, 2 gb sd card and the power cord...All for $5. Anyway, I go to turn on the unit and all I get is the red x pic on the unit showing it is not recognizing the card. Now I have no idea as what to do. Can I purchase an sd card with US maps pre-loaded? Do I have to do this myself and should I download from the TomTom site? How do I download, how much does it cost? Any help would be most appreciated.