Wedding Coordinator

So, we are seriously contemplating hiring a wedding planner, or coordinator, or whatever they're called. We really have no idea where to start, and don't have referrals from any friends. Anyone here have a referral and, if possible, an estimated price?

We want more than just a 'DOC', and are really looking for someone we can describe our vision to and have them make it happen. Any suggestions? Thanks so much!