Bring 1 cup water to boil; stir in gelatin until dissolved.
Add remaining 1/2 cup water and juice.
Gradually add gelatin to cream cheese, mixing until blended.
Chill until thickened but not set; fold in pineapple, marshmallows and nuts.
Pour into 1-quart mold; chill until firm.
Unmold onto serving plate; surround with lettuce.
Serve with assorted fresh fruit and nuts, if desired.