I have LOMAC, FC2, and DCS: Black Shark. As far as I know, all the activation does is put a token into the registry that the game will recognize as a legitimate activation, and there is even an application out now that allows you to save the registry entry if you have to do a major hardware/OS change, this way you do not have to use another activation or deactivation. You have 8 activations and 10 deactivations I think, and you can acquire more if needed by contacting customer support with your proof of purchase.