Christmas Ribbon Salad

First Layer:  
Make 1 pkg. (3 oz.) green Jell-O as directed on package.
Second Layer:
Dissolve 1 pkg. (3 oz.) lemon Jell-O in 1 cup hot water in top of double boiler.  Add ¼ cup marshmallows, ½ cup crushed pineapple, and 6 oz. cream cheese.  Beat until blended.  Cool slightly- fold in 1/3 cup salad dressing and ½ pint cream (unwhipped).  Chill in bowl until thick and then pour over first layer.  Chill until set.
Third Layer:  
Make 1 pkg. red Jell-O as directed on package.  Pour over top of second layer and allow to set in refrigerator.