quick question

i just recently started using PT12... and i was wondering how many computers am i allowed to run the software on? i am wanting to put on my desk here, my laptop and my studio computer (which will be my main audio unit) i know i can only run one instance at a time and i only have one ilok to move around between the three. i want the lap for portability if the need arises. like i said my studio computer is the main workhorse... but i would like to put it on my gaming rig just for when i am bored and want to just fart around. would all this be kosher? cheers