My sister is a Montessori teacher. Her three daughters all started in Montessori schools. One is still in it.
Her advice to me (I have a 3 month old) was: "A good method, but not for everybody. Some kids need more structure than Montessori provides."
My wife and I are going to homeschool, starting with a Montessori-type approach. We will then modify our style so that it more closely matches with the needs of our daughter.
There is a wealth of info on the web. Drop me a Freepmail if you need some places to start.
I have heard the exact same thing.