That is strange, it works for me on Windows 7 Home Premium SP1 64-bit with freshly downloaded VM+imageI reported a problem with the mouse right-click under Windows 7 last January and the 30845 update still exhibits the same behavior.
Selected Pharo Tutorials from the World menu. Expanded Pharo Syntax Tutorial. Clicked Welcome. Highlighted 'PharoTutorial next.' Right-click of mouse does nothing. Fortunately, Alt-D does perform the do-it action. Once the new tutorial window opens, then right-click works as advertised. It is just that first panel where it is non-functional. Unfortunately, that panel tells the user "right-click and choose 'do it (d)'"