The D-Link router set up without incident and it even came with directions for the mac. We now have the flat screen iMac and the iBook connected to the web and to each other. By the way, the only difficulty encountered was inserting the airport extreme card in the iBook. My husband and I both worked on it without success. We called Apple and even emailed the tech guy digital pictures of our insertion (via the other computer, of course) without getting any help, although he tried hard. Then DanF showed up at our door and inserted it for us in about 20 seconds. We were just afraid of breaking something and weren't pushing hard enough.
Thank you to all who posted replies on the router question. By the way, the iBook is great!! I haven't explored panther yet but will do so soon.
Margie