I have 2 pc's and one powerbook g4 and none of them will connect at the same time to my wireless network. When the powerbook is switched off the 2 pc's work fine on the internet, but switch on the powerbook and nothin happens. I have a Bt Voyager 2100 broadband router and the mac finds it but wont connect to it. All it says is "Safari cannot load thius page as it is not connected to the internet". Is it a problem with my powerbook or my router?