From what I understand, Hamachi sets up a virtual network over the internet, which allows connectivity of computers without dealing with Firewalls/routers etc. Essentially, it allows us to have a standard, easy way for everyone who can use it to connect to other people for playing RTS games. There's an installation guide in this forum, I would try to see if you can use that, and then you can look at some of the Hamachi networks in my "Hamachi Networks by Person" thread to hopefully try it out. Post here or in the help thread if you are having difficulty.