Any time that I use my wireless router to connect to the Internet on my iBook or intel iMac, I can never connect to the iTunes store. My web browser works fine and just about every other app I use works fine with this setup. I think the problem is my router not set up properly, but don't know much more. Is it ports that aren't open? Any help is appreciated as I need to get rid of the wires running across my living room floor. Thanks.