My airport detects the internet connection at school, and connects to it. However, whenever I open firefox or safari, I cannot browsse. Firefox tells me "Page Load Error" "Address Not Found." I open Network Settings and see that airpot has an IP address and I try to renew the DHCP Lease, but it yields the same IP address, and still I am not able to browse. My iPhone is able to browse from the same router to which my computer is connected, with no problems. Whenever I insert an ethernet cord into the computer, the internet loads perfectly. What could this problem be? Please help.