I have added Airport Express on my iMac (10.6.3) for my internet but the message "Network Connection. Could not find a PPPoE server." keeps popping up three or four times when I start up my mac or when it wakes up from sleep, usually at the most ill-timed moments when I use Photoshop & Illustrator.
How do I prevent my mac from connecting to my ethernet without having to disconnect it from the menu bar all the time?