Ok so my brother bought arma 2 as a disc (not on steam) and he let me put it on my laptop. It worked all well and good but the servers wouldnt let us go on the same one for DayZ. Is it the same IP that we cannot join (would be incredibly annoying) or using the same activation code. I was thinking of buying it on steam but im not entirely sure that they have they same servers or if it is separated to steam and non-steam. Otherwise it would just be a waist of money.