Ceejay (DayZ)

Hi, Currently running Arma II : OA on steam and downloaded the standalone mod through steam also. I have not been able to get into a game for various reasons. which are screenshot below. Incorrect version : I highlights in red that i need a higher version ? how do i obtain this ? http://i49.tinypic.com/30m76sn.jpg Bad version server reject : an error message that appears once i find a game that does not highlight in red http://i48.tinypic.com/2uy6tqv.jpg Modified/Unsigned files : Once i am able to find a game that isnt highlighted in red nor gives me bad version message this appears http://i46.tinypic.com/2q9cuqf.jpg Again to recap i am running via steam and have installed Arma II : OA and Dayz standalone mod just yesterday so i would assume i am up to date.