Apologies around the table for the 2nd thread, but this is very important. I believe I have pinpointed the exact problem of why my airport card is not recognized. I am following this discussion on the Apple website. http://discussions.apple.com/thread.jspa?threadID=1201382&tstart=0 Since I updated the computer to the latest Leopard software, it is causing a problem with the AirPort recognition. In system files, the "AppleAirPort2.kex" file is not there. So I have to install the Keychain and Login 1.0 Update, then the new key will be there, so I can delete it, restart my computer, and get the AirPort working. I just downloaded the Keychain and Login 1.0 Update, but run into a problem when going to install it. This is what I get. "You cannot install Login & Keychain Update on this volume. This volume does not meet the requirements for this update." Here's a picture. Please Register or Log in to view imagesPlease Register or Log in to view images What is the meaning behind this? Any way I can find a solution to this? Once I can bypass this error and install it, I can finally delete the AppleAirPort2.kex file and be able to get my AirPort card to recognize. Serious help wanted. Thank you.