You'll likely also have to remove the clamp that holds the emergency brake cable to the lower control arm, or it will fight you when you try to swing up the caliper.
Put a large C clamp around the caliper, and the other end on the outside pad. Depress just a little, just enough to move it I believe the spec is about 1 mm. Anything more than that can destroy the caliper. The piston has to be spun back in, not depressed like the fronts. You can buy a spanner wrench at sears, or use pliers or vise grips. Be careful not to damage the boot around the piston.
Black 2000 SSEi, Silverstar Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, drilled 180 degree thermostat, Intense FWI, PCM, shift kit, and 3.4 Pulley. Solid front mount.