1In lg bowl, mix together the flours, baking powder and salt. In another lg bowl, w/ a mixer, beat cream cheese w/ butter until smooth. Add sugar and beat until smooth. Add eggs, one at a time, beat until light & fluffy. Add lemon juice, 1-1/2 tsp grated lemon rind and vanilla. Slowly add flour mix until well blended. Spray a 10-cup capacity bundt pan w/ cooking spray. Heat oven to 325. Pour cream cheese/flour mix into pan. Bake for 1 hr, or until a toothpick inserted in center comes out clean. Invert and place on serving plate. Dust w/ powdered sugar, and sprinkle w/ remaining lemon rind.