I am at my friend's house and I can't join their wireless network. I have a PowerBook G4 with airport card and he has a Dell with a wireless router 2WIRE658 with no password. He tells me he had someone set it up and he doesn't know anything about computers except he uses it to surf the net. I turn on my Airport and choose his network. I type in 'admin' for the password and then I get a full signal, but when I try to open Safari, it tells me I am not connected to the internet. How can I get a signal but not be able to get on the internet? I don't know where to begin. Thanks in advance because I am stumped beyond belief.