In A 1-1/2-Qt. Microwave-Safe Bowl, Heat Cream Cheese, Uncovered, On High For 45 Seconds. Stir In The Sour Cream, Milk, Mayonnaise And Worcestershire Sauce. Add The Kielbasa, 1/4 Cup Of Onions And Parmesan Cheese; Mix Well. Microwave, Uncovered, On High For 2-3 Minutes Or Until Heated Through, Stirring Once. Sprinkle With Remaining Onions. Serve With Crackers Or Vegetables. Store In The Refrigerator.