Tortilla chips are simple to make, whether you plan on converting them to Doritos or not. For your tortilla chips you will need:
Soft corn tortillas
an oil with a light flavor, like sunflower, soybean, canola, etc.
Using a pastry brush, spread a thin layer of oil on both sides of 1 tortilla. Lie flat on cutting board, and stack on another, brushing oil on the top. Repeat until you have a substantial pile.
Take a sharp knife, and cut your pile of tortillas into even sixths. Lay out on an oiled baking sheet. It doesn't matter if your triangles are touching, but try to not have any overlap.
Bake at 350 until they start to lightly brown, approximately 10 minutes. Be sure to watch carefully so they don't burn.
If you're not in the mood for Doritos anymore, salt lightly and enjoy with salsa.