Ibetchuwontdoit

I'm having the very same problem. A friend of mine introduced me to this game last weekend, so after spending the money to beef up my PC to play this, then buying both versions of ARMA 2 and can't connect to anything because it says I'm running 1.7.6.1 and need 1.7.6.-finalising. I've tried reinstalling and updating via steam and DayZ Commander. No change to the problem. PLEASE find a solution, as I'd really like to play this weekend :(