Hi, I'm about to buy my first ever mac and am so excited. I've been doing tonnes of research and want the basic 21.5" iMac. I love playing the sims 3, but one thing that concerns me is the lack of a physical scroll wheel on the magic mouse. I'm used to using all the shortcuts on the keyboard and using the mouse to navigate around my sims lots and I always use physically click and hold the scroll wheel to rotate 360 degrees around my sims lots. As the magic mouse doesnt have a scroll wheel, is there a gesture you can use on the mouse to re-create the 360 degree spin?