I just got an Extreme last night when my Netgear router died. So I set it all up, and have my 2008 iMac and PowerBook all connected. However, my daughter's iMac (lamp) sees the network but does not pass the password for some reason and it not allowed to join the network. Does the old imac have an issue with the security setup of extreme? I used to have the network with no password but thought it would be a good idea to protect it when I set up the extreme. So where she did not have an issue with the Netgear, she can not connect to the extreme. Any ideas?