henrietta - that would work! just put cardboard or something around the sides to prevent drafts. have you checked out the brooder pics thread? lots of variations there, and you'll get good ideas!
Not yet, but I will be! Thanks for the tips. Chicks will be a new adventure for us. Withh three dogs and two cats in the house it's going to be tricky. As long as the 5yo keeps the doors shut we should be okay.