Ahh - found it. You started a new thread. If you had posted in this thread we would have seen it 3 months ago! There are hundreds of thousands of message on the forum so sometimes we miss them. If we do you can just post again in it to bring it back to the top of the list.
Can you explain which game you are talking about so we can move this thread to the correct tech support forum and get you some help.
If you mean Commander Europe at War Gold then yes you can install to another machine for personal use. Grand Strategybis anfre expansion so not something you bought and can be installed anywhere.