Teri, There are at least two problems you are going to run into by removing the tile. First, when tile is removed from drywall it tears the surface paper off of the drywall. The paper on the front and back of drywall is what gives it its strength, so this seriously weakens the drywall. Second, with the paper on the drywall gone the only thing that the tub surround can be glued to is the gypsum in the middle of the drywall. However, the gypsum will not hold adhesive. The tub surround panels will eventually come loose. What to do? You could try finding a tub surround with deeper panels that will fit over the tile. You could also use your current tub surround and find some kind of thin trim material to cover the gap around the edge between the tub surround and the wall. Finally, the best solution would be to cut out and replace the drywall behind the tile. Good Luck!