Upgrading to avast! Internet Security

I just purchased the avast! Internet Security upgrade from my free version of the software and I bought the license for 3 computers. Downloaded the file and it installed and upgraded the software fine. For the other 2 computers do I just run the same file on them to activate it, or do I need to get a separate file for each computer from somewhere?

No the same licence file will work on all 3 computers