Completely dissolve gelatin in boiling water. Add ice cream by spoonfulls, stirring until completely melted. Chill until thickened but still spoonable (Not completely set) Meanwhile, trim off about 1 inch of the ladyfingers and place cut ends down around side of 8 inch springform pan. Have rounded sides of ladyfingers facing outside of pan. Spoon thickened gelatin mixture into pan. Chill until firm, about 3 hours. Remove side of pan. Garnish with whipped topping, fresh fruit and mint leaves if desired.