From what I've gathered, basically, you open your GCCG folder, and create a folder in there named "Home". The way the program is settled, when you run it, it'll load the info that is stored inside this "Home" folder. So what you do is create a folder with your name, say, "Legolas3333", and another one named, say, "Legolas3333's Brother". Before logging into GCCG, if you will be the one playing, you rename your folder "Home". Ok, log in, play, etc. When you're finished, rename it "Legolas3333" again. When your brother wants to play, he does the same with HIS folder. So on, so forth. A bit clearer?