I have a Logitech LX5 Cordless Laser Mouse that wouldn't orbit using the scroll wheel. I have just discovered the solution from a Logitech forum, to re-assign the scroll wheel to "middle button". Works great now

http://forums.logitech.com/t5/Mice-Software/LX5-can-t-orbit-or-pan-in-3DS-Max-or-SketchUp/td-p/198517