When you purchase old houses, chances are good that you will become the new proud owner of one or two wood panelled rooms. Congratulations! What's that I hear? Groaning? Grumbling? Sorry. I already heard that from my husband when we purchased this house. Our family room, with its built-in bookcases, brick fireplace, and all of its wood panelled glory was destined to become my husband's man cave. But my husband had visions of the room just looking like a cave, period. I knew that with a few…