1.. Preheat oven to 350. 2. Mix together pretzels, 1/4 cup white sugar and butter. 3. Press into a 9x13 baking pan and bake for 10 minutes. Cool completely. 4. Beat together cream cheese and remaining 1/4 cup sugar. Beat in whipped topping. 5. Spread on top of cooled crust. Refrigerate. 6. Mix together boiling water and gelatin until dissolved, about 2 minutes. Refrigerate for 1-1/2 hours. Mixture will still be liquid. 7. Add peaches to gelatin and carefully pour on top of whipped topping layer. Refrigerate overnight. 8. Slice into bars and serve.