When I go to System Preferences > Network, I see four choices... - Wi-Fi - Ethernet - FireWire - Bluetooth PAN This box is showing me the different ways that I can connect to the Internet, right? Can someone explain the choices? I understand what a Wi-Fi connection is, since I use them often at places like McDonalds. Ethernet means a "cabled" Internet connection, like DSL or cable, right? And I thought FireWire was special cable that is super fast that you use to connect to things like an external hard-drive. So what does that have to do with connecting to the Internet? And I thought that BlueTooth was for things like a wireless keyboard. What does that have to do with connecting to the Internet?