I have recently purchased a MacBook Pro after being a lifelong Dell laptop user. My roommate has always had a wireless router that both of us used to connect our laptops too. It is secure and requires a password to use. Now, when I try to connect using my MacBook, the AirPort asks for the password, which I enter, and it says it is connected and gives me an IP address (the bars are full too).....however, I can not get onto any internet site using Safari or connect to iTunes. When I disconnect and connect to an un-secure network in my building (an Apple Network according to the name), I am able to get to sites and iTunes instantly. Obviously I want to connect to our own wireless connection. Am I doing something wrong or missing something? Any help or assistance is appreciated.