Prepare pudding according to directions on page 176.
Pour pudding in (12 x 8-inch) baking dish.
Arrange peach slices over pudding.
Prepare cake mix according to package directions.
Pour over peaches and pudding.
MICROWAVE 10 MINUTES on HIGH, or until a wooden pick inserted in cake center comes out clean, rotating dish 1/2 turn after 5 minutes.