Peach Jell-O Salad

2 small boxes peach gelatin
1 1/2 cups boiling water
1 (20 ounce) can crushed pineapple
1 (14 ounce) can sweetened condensed milk
1 (8 ounce) container sour cream
1 cup chopped pecans

Dissolve gelatin in boiling water. Stir in remaining ingredients. Pour into 13 x 9-inch pan. Chill.