Zkane, it's not that you can generate it, some games show a Steam pop-up during start-up with a warning that goes like this: "This Steam game requires a special product key, shown below. When the game asks for it type it as shown here". Also, there used to be an option to "View CD key" in some menu, but I don't remember where :-/ I hope they come back to us with an answer, I'd like to use this software but I draw and program in Linux and don't like the idea of having to switch from Linux to Windows just to animate something or tweak an animation.