Can't use Control key to make right-click in Unbuntu 9.10

I just installed Ubuntu 9.10 in Parallels 5 using the assisted install on a MacBook. Everything works fine except that pressing the Control key and clicking doesn't cause a right-click. As far as I can tell, there is no way to right-click from the MacBook. Which Parallels or Ubuntu settings do I need to change?

 

Shift-Ctrl?

 

Yes, thank you! Is this documented anywhere?

 

Yes, I read it somewhere in the Parallels documentation...
FWIW, I usually follow my own advice in http://ubuntuforums.org/showpost.php?p=5801976 in assiging the right-click to the single right-Alt key...

 

Although you have found a fix, I would strongly recommend investing in a three (or more) button mouse. It works seamlessly on all platforms, including of course OS X, which Apple for some reason have not until recently been keen to advertise.