1. A method of automatically registering a surgical navigation system to a patient's anatomy, comprising: programming the surgical navigation system with a first spatial relationship between a surgical component and a reference array connected to the surgical component; programming the surgical navigation system with a second spatial relationship between an anatomical feature of a patient and the surgical component; installing the surgical component on the patient such that the surgical component engages the anatomical feature in the second spatial relationship; and locating the reference array with the surgical navigation system, wherein the navigation system automatically recognizes the position of the reference array relative to the patient's anatomy.