Finally, this is what I've been looking for. Having to switch to the Dvorak Keyboard layout means that you have to give up the convinent one handed QWERTY shortcuts: ctl-x, ctl-z, ctl-v and ctl-c. Now I've found that Mac and now Ubuntu let's you have dvorak but QWERTY shortcuts at the same time! Where's the Windows equivalent of that? Here it is.
Update: Hmm, interestingly, this doesn't work at all inside firefox...