I'm Mage. I recently got the game after playing it cracked for weeks. You can call me whatever you want, though. I go by Tom, Thomas, Faggot, Idiot, or even Mage. I work on private servers and reside on LeakForums. Originating from Florida.
No, your potato will not run DayZ. Your best bet is running Windowed and minimum graphics. Buying a new computer is worthless, just get razor gamebooster or overclock. There is no need to get anything considering Arma is a fairly easy-to-run game...