Potty Training

I've been reading the books and scoping out the websites. Do any two experts agree? Here are some sites, maybe you can sort it out.

Toilet Training at KidsHealth's Parenting section
http://kidshealth.org/parent/emotions/behavior/toilet_teaching.html

Toilet training your child from FamilyDoctor.org
http://familydoctor.org/179.xml

Dr. Greene's columns on training
http://www.drgreene.org/body.cfm?id=46&action=search

Dr. Spock on toilet training
http://www.drspock.com/topic/0,1504,154+AgeY1_2+cbx_behavior,00.html