Yesterday I met Bob over at Santa Fe Archery to do a little shooting and the question came up about Brace Height. I found that I had been measuring from a different point on the bow than Bob and Steve of SFA. So I decided to do a little more research on the subject and came across this.
http://www.3riversarchery.com/longbow-recurve.asp
It is a pretty good place to start for anyone just getting started. BTW after reading it, it appears many folks measure brace differently, but I'll let y'all read and decide for yourselves what is best for you.