We used Babywise with both of our kiddos (3 1/2 year old boy and 5 month old girl). They are on a great schedule and VERY happy children. My daughter's current schedule is up at 6 to nurse & have some solids - we are still introducing them, play time until about 8 or 8:30, then bed until 11ish, nurse & solids at 11:15, play, bed at 2ish, wake at 4, nurse & solids, usually she doesn't go back ti bed until after 8:30 when she nurses for the last time and then goes directly to bed until 6 the next morning. I also usually pump right before I go to bed (so I have milk for her cereal the next day and to keep up the supply).
If you have a chance, read the first Babywise book. The best part about this book is that it helped me teach my daughter (and her older brother) to put themselves to sleep - a wonderful skill at 3 a.m. =O}
The basics are that you put the baby to sleep when he is tired, and if he cries, you go in and pat / comfort him after 5 minutes. Lay him back down, and repeat in 5 minutes. Reeat 10 minutes later if needed... My daughter currenlt usually only fusses for about 1-2 minutes before she falls asleep & she wakes up very happy.
If you have any other questions about this, just let me know. Good luck =O}