What size fixed gear bike do i need if i am 5'12?

Hi i am going to be buying a fixed gear bike to get around and for fun ive rode a few of my friends and i know how to skid pretty well and whip it ok so i really like it, but i was wondering what size i might need, i am getting the 2008 pista new in chrome and my friends are giving me i guess some pretty good pedals and bars because i guess the ones that come with it suck thanks for your time and any other feed back about fixed gear bikes would be great. thanks again!