From how I understand it, it is ok to have multiple copies installed on several machines at the same location, only catch is that it can be running simultaniously, that means it cant be running on 2 machines at the same time, but you can, Like Poser for example, with the latest 4.03 patch, it does a network check to make sure Poser inst open and running on any other machine on your network, if it is, Poser wont load and run until the other machine has closed and unloaded Poser. yu can install on several machines, yu just cant legally have it running on more than 1 at a time. Ken