Cook pasta, drain and cool. Combine with all of the other ingredients in a large mixing bowl, and then mix up the dressing.Dressing: 2 cups mayonnaise + 1 cup buttermilk + 1 pkg. Hidden Valley Fiesta dip mix (I have had best luck finding this at Walmart)Add dressing to the salad and keep refrigerated until ready to serve. Right before serving, add in Frito corn chips to taste. Enjoy!