I have no idea what to do. Does anyone have any ideas?

I've trained horses........................horses that have been handled by people. I have never done this, so its a new experience :) I have acquired two horses that are 3 years old that have never been handled! They are the sweetest girls ever once you chase them around and catch them. They've been "halter broke" which means they have gotten halters on and walked around a bit but wont come up to you, they wont let you catch them and they are so fearful at the slightest touch. Does anyone have any idea on where to start? I don't want to coax them in with treats because than they might get nippy. lol Does anyone have an idea of how to get them to trust me without running around like a mad man trying to catch them? What are your suggestions?