In a blender container combine the nectarines or pears, raspberry-cranberry juice drink or cranberry juice cocktail, and vanilla yogurt. Cover and blend mixture until smooth. With the blender running, add the ice cubes, one at a time, through the opening in the lid; blend mixture until slushy. Pour into 2 tall glasses. If desired, garnish with nectarine or pear slices. Serve immediately. Makes 2 (8-ounce) servings.