I'm going to be purchasing a MacBook sometime soon (actually, most things seem to indicate it'll happen today) and I have a question about the AirPort Extreme. Now, I'm not entirely computer savvy, and hence the reason why this might be a stupid question, but I just want to make sure that I get it right before I decide to purchase it. I've never owned a notebook before (it's always been desktops for me, so pardon my ignorance.) The AirPort Extreme is basically a router, correct? It'll have a slot for my Ethernet connection coming from my DSL modem and I'll connect to it and then it'll transmit the connection to my MacBook, allowing me to surf the net without wires all around my house. Have I gotten that right so far? My MacBook comes with the AirPort Extreme Card, which means what exactly? Lastly, the AirPort Express with AirTunes basically serves the same function as the AirPort Extreme, except that it allows me to connect more things to it than just the Internet connection, right? Do I need the AirPort Extreme base in order to use the AirPort Express or what? Sorry for the load of questions but I just want to have all the right information for when I purchase the MacBook. Thanks.