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This is a guess but do you add shift to the 2 finger? Reason is I use Parallels (not BootCamp) and use control-click (not 2 finger) and my VM uses shift-control-click for a right click. Give it a try, it may work. Better still, most of the time I use a mouse. -GDF
 
So long as you go back and install the BootCamp drivers from within windows, two finger click will work as right click just as it does in OS X.
 
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