If the rotors are ok all you need is a 6" C clamp and a block of wood.
Remove wheel (duh), carefully pry open the brake pads to give a little clearance from the rotor. unbolt (2) the caliper from the spindle mounts and slide the caliper off the rotor. Remove the pads, place a 1x block across the piston and use you C clamp to compress the piston all the way back into the caliper. Make sure that your fluid resevoir does not overflow. Install the new pads, remount the caliper and repeat on the other side. BE CAREFULL, the first time you apply the brakes. The vehicle won't stop untill the brakes are pumped a few times.