Marbled Chocolate Rum Pie

1 Env Unflavored Gelatin 1 Cup Milk 1 Cup Sugar 12 Oz. Semisweet Chocolate Chips 1/8 Tsp Salt 1 Cup Heavy Cream 2 Eggs Separated 1 Tsp Vanilla Extract 1/4 Cup Rum 9 Inch Baked Pie Shell   In double boiler mix gelatin, 1/4 cup sugar and salt. Stir constantly. Add egg yolks, milk and rum, stirring until slightly thickened. Remove from heat and stir in chocolate chips till throughly blended chill until thickened but not set. Beat egg whites till foamy, gradually add 1/2 cup sugar and beat till Very stiff. Fold into chocolate mixture. Whip cream with remaining sugar and vanilla until it is very stiff. Alternate the two 2) mixtures in the cold pie shell; swirl with spoon. Chill until firm.