Member Since: Dec 22, 2006
Location: Texas, where else?
Mac Specs: 15" MBP 2.33 C2D 256 4GB, MBA 13" i7 1.8, MB 2.0 2GB, Nano 4th, 3GS, iPad 1
05-22-2009, 11:15 AM
Open System Preferences - Network
highlight Airport on the left if not already
click the Advanced button
make sure you are on the Airport tab
In the Preferred Networks box - delete any old networks that are not being used any longer (highlight and hit the - button)and move the one you want to join automatically (drag it) to the top of the list
I've also had success with this problem by deleting all the networks in that Preferred Networks box and then adding it back in.
I cannot be held responsible for the things that come out of my mouth.
In the Windows world, most everything folks don't understand is called a virus.