Place a wonton wrapper on a work surface with one corner facing you; roll into a cone. Cut the open end with a sharp scissors until edge is even. Place a 1-in. foil ball in opening. Place seam side down on a greased baking sheet. Repeat with remaining wonton wrappers.
Bake at 375 degrees for 10 minutes or until golden brown. In a small bowl, combine the butter, 1/2 tsp.dill and garlic salt. Brush over horns. Remove to a wire rack to cool completely. Remove foil balls.
In a mixing bowl, beat cream cheese until smooth. add the sour cream, lemon juice and remaining dill; mix well. Fold in the crab. Transfer to a pastry or plastic bag; cut a hole in the corner. Pipe into cooled horns.