I have two drawings of a building floor. One is demolition of existing items and the other is the new work and items being installed. I'd like to be able to overlap the two of them to see what distance there is between the old demo and the new work. Is this possible and if so how? I thought of converting these to autocad drawings but the program I'm using is not working for some reason. I thought maybe it might be possible in Photoshop but I'm not very proficient with Photoshop. Any thoughts on how I can do this?