So, woke up one day to have my MacBook Pro (2.4 ghz intel core 2 duo) not linking to the internet. I have an Airport and a router from service provider. 1. Tried everything from resetting IP addresses, to deleting and creating new link to Airport. - Restarting everything. - Reinstalling computer system. - Deleting files. - Zapping pram. Etc. Anything I could find tried. 2. Tried hard wiring the laptop to the router....nothing. No internet connection. OH, and my system seems to running a little sluggishly. Snow Leopard. (was up to date, but because of reinstall not so. need internet to upgrade again) So... 1. What is the problem? 2. Do I need to replace the airport antenna? 3. Do I need a new internet card? (Does the MacBook Pro even have an internet card?) 4. I saw there are those little USB antennas that some people have used. Thanks for your help in advance. I am at my wits end.