Lightly Beat Eggs With Milk; Add Tortilla Chips. Let Stand For 15 Minutes. In A Large Skillet, Saute Ham, Onion And Green Pepper In Butter. Add Egg Mixture And Cook Over Medium Heat, Stirring Occasionally, Until Eggs Are Set. Remove From The Heat; Gently Stir In Cheese And Tomato. Serve In The Skillet Or Transfer To A Warm Serving Platter. Top With Sour Cream And Taco Sauce.