I have a perfect wireless connestion on my powerbook, however when I try and use the ethernet cable it wont pick it up. my mac says ethernet cable is not plugged in and the light on the router is not lighting up. I have just tried the ethernet cable in a windows laptop and it works fine, the light on the router comes straight on and the windows laptop picks it up and connects to the net no problem, could there be something wrong with my powerbook???? thanks all in advance