Hi all, Your iPhone can connect to the net from anywhere it can get a signal, almost anywhere. How would one add this ability to a MacBook? I'm imagining a small battery powered modem that creates a wi-fi network. Or something like that. There's a nice little table in the back of our Eurovan, and if I had such a device I could take my work life mobile, and would get to spend a lot more time in the nearby state parks. How do I make this happen?