Here's a tip for removing nails from drywall without denting it. I have usually used a piece of wood and a hammer but I couldn't always get in tight spots like next to the molding of a window. So recently I decided to try my 4 inch metal putty knife. I just slide it under the claw of my hammer or even better, I use a nail puller that has a rounded claw and rubberized grip which I bought at Home Depot. It's inexpensive, quick, easy and no dented walls! I had removed paneling from my walls so I had lots of nails to remove!