This iBook I just bought is the first Airport-equipped computer I've ever used, so I don't know anything about it really. I did notice that when I clicked on the Airport icon on the desktop, it showed me a list of what appear to be the names of about half a dozen networks. Are these just local networks that I'm picking up inside my apartment, or are these networks that have previously been used on this computer? Because, um, this computer was supposed to be new when I bought it....