MIX wafer crumbs and butter; press onto bottom and up side of 9-inch pie plate.
ADD boiling water to gelatin mix in medium bowl; stir 2 min. until completely dissolved. Add ice cubes; stir until gelatin is slightly thickened. Remove any unmelted ice. Add COOL WHIP; stir until blended. Gently stir in peaches.
REFRIGERATE 15 min. or until gelatin mixture is thick enough to mound; spoon into crust. Refrigerate 3 hours or until firm.