Swimmies

I got a message saying "Addon 'dayz_anim' requires addon 'CA_dubbing_Counterattack'" when I try and enter a server. What does this mean?

Thank you, that was very helpful. :)

I bought a retail/boxed copy of ARMA 2: Combined Operations today (with Operation Arrowhead included). I installed them both to my computer and am having all sorts of trouble between downloading the right patches and putting them in the right folders. Can someone please just tell me EXACTLY what I have to do so I can start playing on the Day Z mod because I can't even get past the patching for ARMA 2. Thanks in advance.