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 3 cm of the ladyfingers and place cut ends down around side of 20 cm 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.