Hi.I having a big problem with ArmA2OA and DayZ.Yesterday i logged off from ArmA2OA,and when i tried to rejoin to the game,it said "bad serial number given in setup".I tried everything from forums,but nothing.I have the game without steam.Only ArmA2OA and DayZ doing this.The normal ArmA2 works fine.

Hi.I tried to play DayZ but after 1-2 mins the game start to lag extremely.i dont have steam version,and the problem isnt my pc. I only found this to repair it: 1. Go to your Steam library 2. Right-click on Arma 2, then choose properties 3. Press "Launch options" 4. Here, enter -CpuCount=#, with # being your number of CPU's. but because i dont have the steam version,i dont know how to do this.

but i said i dont have the steam version.Or where i can find this "launch options" part?

normal pc

AMD with 2 mag,1 gb nvidia videocard and 4 gb ram my graphics settings are on minimal,i turned off everything i had to.