Yeah DayZ
It does, although there are quite a lot of other mods that dont work, although i cba to get em. DayZ will also be Arma 3 compatable apparently.
Controls are simple enough when you get used to them. But you need a proper keyboard, not a laptop Not that any laptop could run ARMA well anyway.
For the mod you need Arma 2, and Arma Combined Operations. (the free version of Arma 2 works as well as it mainly uses Arma:CO)
Although i bought the entire series when it was on offer
Just go on the DayZ site, and theres a tutorial vid. Pretty simples.