Q: One visitor asked, "Our hardwood floor is making some creaking noises in some areas. How can we fix this? "

A: There is a simple device you can get from Home Depot that attaches to a drill. You drill a pilot hole in your hardwood floor, above a floor joist with the drill bit provided. Then you use the special screw in the kit and drive it into the wood. At a certain point, the screw head will snap off, below the surface of the floor, leaving only a tiny hole to fill. This may or may not work. The problem is most likely a loose sub floor, and that is what has to be secured. The finished floor is only as solid, stable as the floor it sits on.
The other option is to remove the finished floor, screw plywood down and put in a new floor. I do this work!:)