I just installed SolidWorks after using it a bit at my college, and it seems some of the mouse settings are different.  When I hold down the mouse scroll wheel the model rotates constantly clockwise, not just when I move the mouse.  It also shifts the model left when I hold control to pan the object.  I'm sure it's just a setting I need to change, but I can't for the life of me figure out which one. 

Thanks.

Colin