How do I replace ignition switch '70 Dart Swinger

On that subject, how do I get it out of the dash? Do I need something like snap ring pliers to unscrew the ring holding the switch in place?
naw, just put a flat head screw driver in one of the many slots of the decorative nut you see on the dash and tap the screw driver with the palm of your hand and it should unscrew....