It's the easiest thing in the world.
Install, sign up an account, download supported roms and put in rom folder in program files(don't unzip), open ports, done.
It took 10-20 minutes ti set up all together.
I wish more people would play dungeons and dragons 2 with me(even though it doesn't have 4 player support yet). It's nice playing with other people every one in a while.