HFBservers is the best in my opinion, I have used many others. But its not as easy to setup as Dayz.st. go to your hfbservers.com game panel and see what your game servers IP is. .. and the port Go to your Arma2/Dayz game and start it. On the MULTIPLAYER page, button at the bottom right that says 'REMOTE' ... put your ip:port here and if your server is up and running you will see it in the server list.