My wife just purchased Microsoft office because she needs it for work. Is it legal to install the software on her brothers computer that he uses for school? I say no, but my wife and I really do not know the answer. I say that we can install the software on all of our computer since we purchased the software, but we can not install it on a realitives. Can anyone clear this issue up? I feel like this falls under the issue of file sharing. Plus we'd have to use the activation code on this computer, right? I really do not know the answer to this.