So I just got my MacBook, mainly for school. The wireless service at my school requires a username and password so I went to the place and paid the 10 bucks for it. They said when you open up "Internet Explorer" (I chuckled) that a window would come up asking for your permission to continue or whatever and then you have to put in your username and password. When I join the network in Airport it says I have full bars however when I open up Safari or Firfox it instantly says that I'm not connected. What can I do so that it will ask me for my username and password so I can actually use the internet? I have gotten to the page where it asks me for my username and password before but I hadn't yet set up an account so I just exited out. Now I can't even get to that page! Hopefully there are some people out there that use the same type of wireless service at their college...