Dray (DayZ)

I have just installed my game. Actually i just bought it from Steam and i downloaded the mod and everything. But the only thing is when i try and join any server, It just says you have been kicked of the game. I don't understand why and i would love to get this figured if so. Thank you and hope to here from you soon.

How do i update my files and what the Worrow thing?

Can you explain to me what i can do fix it. I am not quit understanding what to do and would be awesome if you could give me a hand and explain to me how to fix it Alright nevermind i went and verified the files and said i was missing them. It redowloaded it and now i am trying to join and it says that you are unbale to play becuase you are missing Chernuzs download or something like that