If you are like me and hit the windows key on accident  and have it minimize the game here is a registry editor that will disable it. I also found the Caps Lock key to shift key editor. there is also a link to remove the editors again to set it back to the original.
windows key disabler

if you have a logitech keyboard the latest software has a feature to turn the windows and alt menu keys off while gaming

thanks man, big help, I hit that at least once a week and causes my pc to crash forcing me to manually shut down, a real pain to say the least.