so, if i only have one vista key, and i install it on 2 computers... what will happen? will i just get those kind of annoying WGA warnings and thats it? or does it completely lock out the OS or some shit like that. what i am saying is : IF I INSTALL VISTA ON 2 MACHINES WHAT WILL HAPPEN? i AM going with vista, so don't tell me not to... and i am only doing so because i get a company discount on computer parts if i use vista for some kind of ad campaign (don't ask, i don't get it either) so i figured i might as well get the most out of the free copy and install it on my computer as well as my sisters. i know with XP, if you install off the same cd key, all you get is a little notice that says you are invalid. does it do the same in vista?