Recently got this mouse off a friend that doesn't use it anymore (bought a different one). It works and all, but I was wondering if any software needs to be downloaded for me to be able to map controls to the side buttons. These buttons work on steam and Internet browser by allowing me to go forward and back from pages, however in game, I am unable to map any controls to the buttons (neither in shogun 2 or batman arkham origins). I can live without mapping the buttons, but seeing as ie just came over from a console, I'm finding some controls awkward (mainly the controls to the left of the WASD keys (like Lcntl and shift) as my left hand usually stays occupied with WAS and D