Please help with New Super Mario Bros. Controls

[appollo147]

I am needing help setting up the virtual Wiimote for New Super Mario Bros.. I can setup the buttons and control pad just fine, but what I can not figure out how to do is set up the controls for the swinging motion. I would like to use the L&R shoulder buttons to swing left and right respectively to control the rocking motion on the rocking bridges. Could somebody please tell me which setting in the configuration menu would achieve this, or if it is possible to do it at all with a control pad? Any help with this would be greatly appreciated.