I am currently a student at a college which recently switched to a campus wide Wi-Fi connection rather than wired. When the connection was wired I was able to connect my MacBook to the jack in the wall and use Internet sharing to transmit a Wi-Fi connection that I could use for my printer,ipod,ps3, etc. Now that the campus is completely Wi-Fi, it blocks out certain connections from devices such as an xbox. Is there a way to connect a device to my MacBook with an ethernet cable and use the campus's Wi-Fi to get internet connection. Pretty much the reverse way of what I had done last year. Or transmit a different Wi-Fi connection from my MacBook. I know it is possible with a PC, my roomate figured out how to do it and can play xbox just by running an ethernet cable from his laptop to the console.