My brother is pffereing to sell me an iphone he just picked up on ebay. He is the "technological" one, I have trouble with these gadgets, however, since I don't usually go far without my ipod or phone, this sounds like a good idea. The fact the my current cell phone is being held together with duct tape, and that is not a figure of speech, I need to get a new one anyway. This thing will doa lot of things, amongst wich it will navigate on the internet. So it brings me to my question, does anyone know if they are suitable for using with a ballistics program? My bro tells me they are Mac format. Any good?