For any piece of furniture—tables and desks, in particular—the legs are a big source of style. Change the legs, and you change the character of the furniture, helping it relate differently to the rest of the room. Though it depends on the specific piece, removing the old legs typically takes nothing more than a screwdriver. Installing the replacements? Equally easy. But first you have to pick out the new set, which will probably be the most challenging part of this quick project.