In A Small Skillet, Saute Pecans In Butter Until Toasted; Set Aside. In A Small Bowl, Beat The Cream Cheese, Sour Cream And Milk Until Smooth. Stir In The Chilies, Beef, Horseradish And Garlic Salt; Mix Well. Transfer To A Greased 8-In. Square Baking Dish. Sprinkle With Pecans. Bake, Uncovered, In A Toaster Oven At 350