Pour boiling water over gelatin in bowl; stir until gelatin is dissolved.
Stir in sugar, orange peel and juice.
Refrigerate, stirring occasionally, until mixture mounds slightly when dropped from a spoon.
In chilled bowl, beat whipping cream until stiff.
Beat gelatin mixture until foamy.
Fold in whipped cream.
Pour into 4-cup mold or 6 to 8 dessert dishes or molds.
Refrigerate until firm, about 4 hours.
Unmold on serving plate.