Any help would be appreciated.... I am trying to set up an Airport network with a G3 450 iMac, a G4 1Ghz Powerbook, an Airport extreme box and a D-Link DSL Router. I intended to attach the router to Airport, and connect to the Internet via Airport. However, I am having a number of issues at the moment and I am hoping someone here may be able to help. 1. For some reason, the iMac and the Powerbook will not join the same network. "There was an error trying to join....." No clues as to what the error might be. 2. I do not know how to access and set up a link via Airport from one to another ie can I open, control and transfer files and apps on one from another? Any ideas?!