Post a picture of what you have. Without that it's going to be hard to give you accurate advice.
Not a plate, its a toilet flange. If the flange is in good shape, it stays, you cut the subfloor like a clamshell to fit.-j--if it aint broke, tweak it!!currently on FiOS (kick aZZ!)
reply to Pammy I am2 Many different suggestions in a recent thread but I personally will choose the "set-rite" shown near the end when I replace our vinyl floors with tile.»Replacing a Toilet Flange