Hi, I'm visiting Arizona from the UK and I brought my TomTom One Europe with me. I've purchased a USA and Canada map card but when I insert it in the TomTom it freezes up. The only way to unfreeze seems to be to remove the card and press the reset button. I took it into Circuit City today to ask their FireDog dept for help but after 4 hours they gave up....does anyone out there know what to do to get this to work?