The aspect of never getting lost again is somewhat appealing to me. It seems to me that GPS support for the OS X is finally getting to the point where it is useable. I think that I am looking for a USB GPS receiver, one that I can plug into my iBook and turn the screen off and have my iBook tell me where to go turn by turn along the way. Does anyone have any experience with this? I'm not looking to spend any more then $200 USD for hardware and software. Thanks in advance for suggestions.