Here is a link to a thread I posted a while back on building a maternity rack. Each tub is ideal for a mom and her babies.
http://ball-pythons.net/forums/showt...089#post550089
Some people like to pull the females to raise their babies seperately and some just leave them in with the regular colony. It's pretty much a matter of choice. I think it's nice so that the mom isn't being pestered by the male while raising a litter and then she also has some place to recuperate for a while before going back into the breeding rotation.