The walls adn ceiling in an upstairs room of my old house are in terribly condition with many huge cracks, some areas where the plaster has broken off in large pieces (or maybe this is drywall--I am not sure plaster does that), areas where I believe there may be wall paper under the last three or four coats of paint, etc. I am thinking that the only realistic option is to cover everything with drywall--any thoughts on that? The ceiling is actually slightly bowed in places. We have put a new roof on now, but would the old ceiling have to be replaced? Wouldn't that create an incredible mess? Would replacing the walls necessitate removing the 100 year old baseboard molding? I must confess that I don't do drywall, so would I call a carpenter or a drywall taper? Does anybody want to buy an old house that has gone from being charming to a pain in the ---?