The one pictured is a four post lift. It is used for working under a car, however, you cannot remove the wheels when a car is on a lift like this. The wheels are still on a flat surface, holding the vehicle up.
To remove the wheels, you need a lift like this http://img.alibaba.com/photo/11223731/Car_Lift.jpg which is a two post lift, or like this http://images02.olx.co.id/ui/1/98/35/4309335_1.jpg , a single post lift.
A lift will pick up your stuff,jack will lift up your wheels, an impact / or a tire iron will remove the nuts, but none of that will stop the crazy questions on Yahoo answers