Hey everyone, admitted Mac-Noob here - I just bought a used MacBook Pro 1,1 with SL installed, and was experiencing the apparently common issue of bad wifi connectivity, and was trying some of the workarounds available on the web. I read one possible fix involving deleting some files from the 'SystemConfiguration' folder. Well, apperently that should be done from the 'User>Preferences>SystemConfiguration' folder, and not the 'System>Preferences>SystemConfiguration' folder. So when I rebooted my computer, not only does it show 'No Airport Card Installed' where it would normally show my wi fi connection, I cannot access the 'Network' icon in the 'System Preferences' menu. The icon is present, but clicking on it does nothing - it just says "loading network..." and nothing happens and I have to force quit the application because it is not responding. So, to sum it up.... HELP!