First prepare the crust. Preheat the oven to 120ºC , then dry the bread slices in the oven until they are hard enough to crumble easily, (about 20 to 25 minutes). Meanwhile melt the butter. Crush the bread, making about 1.5 cups of crumbs. Add the butter and the sugar and mix very well. Press the crumbs into the pie tin. Raise the oven temperature to 35o degrees F. and bake the crust fro 15 minutes. Allow to cool before filling. Then prepare the filling. In a medium-sized saucepan, combine the gelatin with the water and cook over medium high heat, stirring constantly, until the mixture is clear (about 6 to 8 minutes). Cool. In a large mixing bowl, beat the cream cheese until light and smooth. Mash the blue cheese well and combine with the cream cheese. Pour the gelatin mixture into the bowl with the cheese and mix well. Whip the cream until stiff and fold into the cheese mixture. Pour the filling gently into the prepared crust. Press the grapes upright into the pie, leaving the tops showing. Chill the pie for several hours or until set. NOTE: Since there is no sugar in this recipe, all the sweetness comes from the grapes, it is not as sweet as a cheesecake. If it is too tart for you, add just a little sugar, but it is well liked by most as an appetizer without any sugar added.