I have an iMac 800 and an iBook 800 each loaded with airport cards. The iMac is connected to my cable modem and is setup as a software basestation. For awhile I was recieving signals from the iMac to my iBook and the internet sharing worked great. Suddenly, the computers do not recognize one another. I have the network setup the same but the iBook cannot find the iMac. And I connected the ethernet into the iBook and set it up as a software basestation and the iMac did not recognize the iBook. What am I to do here? All I want is for this to function the way it should. Are my cards dead or something?