Aight, so I'm sure this has been answered a million times, but I want 100% clarification. I have a Apple Wireless Base. I want to hook a 500GB hard drive to it that can be accessed from any laptop or computer in my condo. The questions are: Can this be done in general, and how hard is it to set it up? If bring in a laptop, whether it's mac or not, will is sync up to the wireless and allow me to play music/movies off it's iTunes? Do I need to worry about storying the music/movies on the external to be able to read it with the AppleTV? I was going to keep movies on there, but music on my laptop. The questions come from a new Apple user. My girlfriend has a PC, so I want to make sure we can play music off her iTunes if need be.