Hi all first time poster here: I have 2 questions. I bought a Mac G5 Quad from apple. I've installed an Airport Extreme card for it. The Mac show that thhe card is there, however, I can't find my home network. There are no networks present when I scan or try to give the Mac my networks name and password. I have a powerbook G4 that finds my network fine. I've read other posts that refer to an antenna for the airport card. There is nothing inside or outside the computer that resembles what I've seen on-line. My wireless router is a Linksys wrt54gs. Any thoughts? Second, I installed a second internal hard drive into the mac, and connected the cables. Only the original HD shows up on the desktop. Any thoughts or things to try? Thanks so much for your help!