Please research this book prior to implementing any of its advice. Parents should be aware of the potential consequences of any parenting practice, particularly this one.
Everything you might want to know about Gary Ezzo and GFI: excellent website, obviously dedicated people. Please take a moment to visit it and educate yourself about this parenting practice. Your babies will thank you.
Getting Wise to BabyWise by Salon Mothers Who Think
As an alternative you can check out Attachment Parenting: