Hi J.,
I, like Angela, use the Super Baby Food book which I love. However when we first started our daughter on solids (I don't think we were using the book yet), she also had some constipation problems. Give her up to 4 oz. of prune juice (you can use regular instead of "baby"-the "baby" juice is the same, just overpriced). Give 2 oz., then wait a few hours, if no result, give 2 more. For a while, I'd mix a little bit of mashed prunes to her cereal in the mornings which helped a lot. The other thing is that since she's eating solids, she needs to also have water (or water mixed with a little juice if she refuses plain water) throughout the day. I disagree that brown rice is "packed" with fiber. I believe that it has some, but I add wheat germ to my daughter's cereal for a little more and then most veggies have fiber, and the "p" fruits-peaches, pears, plums. Just remember, the prescription for diarrhea is the BRAT diet (bananas, rice, apples, toast), so these are the things to avoid when there's constipation.
Good luck!
L.