how to change my brakes on a 2002 ford winstar?

Answer 1

jack car up
take lug nuts off
undo the usually 2 bolts that hold the brake pads in the caliper
take a C clap and push the caliper piston back in all the way.
load the caliper with the new pads
put the bolts back in
put the tire and lugs back on
move to other side.

hope it helps.