I am going to a college next year and my room will have Ethernet connection but no wifi, all my devices run on wifi including my printer. I can not hook up a wifi router to the network because the IT admin will see it and shut my connection off. I have heard you can make your iMac the Internet host and then feed it to the airport extreme and make a closed wifi that won't be seen through the network. Does anyone know how to do this please HELP! And please put it in dummy form.