My house is approx 60 years old and has plaster walls throughout. I'd like to replace the existing tub surround (not the tub) because it is bubbling out... If you lean on it you fall into the wall. It was that way when I bought the house 3 years ago. Does anyone have any advice on where to begin? I don't even know what is behind the current surround. I'm thinking that my boyfriend and I can do this ourselves... what do you think? We're both pretty handy...