I'm trying to connect my Xbox 360 to Xbox Live through my iBook G4(10.5.6). I've learned how to do it, but when I go to SysPref>Sharing>Internet Sharing there's no option for Ethernet. I'm not using AirPort, btw, I'm using a wireless adapter from Verizon that goes through my USB. Does anyone know why I don't have the Ethernet option, or how to fix it?