berger (DayZ)

Hi I have downloaded Arma 2/ Arma 2 operation arrowead in steam and are currently trying to play DayZ through the Six launcher. After selecting a server I end up in the multiplayer setup and thats when the game freezes (I can move the mouse around but I am unable to press anything) and I have to Ctrl-Alt-Delete out where i get the message that arma 2 oa has stopped responding. Ive ranned both games in steam before attempting at playing dayz and installed everything as the instruction guide on this forum said. When I start up Six launcher all the servers have 9999 in ping, state unknown and protection bad. I just bought a new computer (MSI GT70 onc) so running the game should not be a problem. I really want to play this mod so any tips/ solutions will be greatly appreciated. Thank you!