Thanks guys. The WoodWeb site sure has a lot to look through. I will try to check out those books Steve, but I'm looking more for something that will go on my computer. I purchased the CD Estimator from Craftsman Books, but I question some of their estimates. They have $70-$80 for putting in an entrance door, or $40 for a window. The program looks pretty good otherwise. Like you said Steve, it's nice to have something to back up your bid.