I've started http://www.youtube.com/watch?v=gDKivlGmia4&feature=youtu.be&hd=1 vid. It was all a-okay right up until he said about how to pan the camera. He says to click the mouse wheel then move the mouse. Nope, just tried it again and I get nothing when pressing the mouse wheel, and when I press the "V" key all I get is zooming in and out. I've tried rotating and that also works okay. It's just the pan function that doesn't seem to want to know. Any ideas what's wrong here?