Plot: Master carpenter Norm Abram and general contractor Tom Silva remove the old vinyl siding from the exterior of the house, exposing not only the original wood clapboards underneath but also lots of repair work that needs to be done. Inside, architect Paul Rovinelli takes host Kevin O'Connor and homeowner Gillian Pierce through the plan for the new kitchen, which calls for a modest expansion, building as Gillian puts it, "just what we need," and nothing more