Wow, lots of experinces, and worth the tries... I have gotton ALOT of books... Maybe some of them you guys may have heard... Wanna know what they are? Read below:
Vicki Lansky's Practical Parenting-Toliet Training
Nathan H. Azrin PHD and Rich M Foxx PHD: Toliet Tranning in less then a day (sounds weird huh?)
Linda Sonna, PHD: The Everything Potty Traning Book

Hopefully that would help... Read some stuff and learn from you guys too