I recently came into possession of an Emac computer, for which I got the Airport Extreme card it needed. All of the rest of the computers in the house are windows, all using a wireless network. I can't seem to get the Mac to pick up the wireless signal though, and whenever I try to connect it through airport all the airport options are greyed out. I'm not familiar at all with the apple OS systems, so this is all new to me. I thought I'd just put the apple card in and attach the antennae to it like the instructions on the mac support site said, which has been done, and it'd detect the wireless network and connect to it, but none of the icons or anything it's telling me to click on are showing up. I can't even find the Internet Connect option! What do I do?