im about to buy a cad program and i want to burn 2 exact copies of it so that there is no difference in installation from the 3 of them, i want to be able to just put the cd in and install it like its the original copy, its a free student license so i dont have to worry about that licensing stuff. how would i go about doing this,what program would i need, should i just drag and drop the files or should i make a special iso image? its cadkey version 21.5.