A couple of years ago, we decided to finish our basement--properly. When we had our home built, we painted the basement walls and installed a drop ceiling and carpet. The "nothing-fancy" sufficed for over ten years, but when our kids married and started having children, we could see we would soon be short of bedrooms. We wanted the floor plan to include: a media room, a small kitchenette, and an exercise room, in addition to the bedroom and bath. Trying to work within the confines of ducts...