Preheat oven to 350 degrees F. Brown and drain ground beef; add taco seasoning and 1/4 cup water. In microwave, melt Velveeta with Ro*Tel until dip is done.
In medium sized baking dish, cover bottom with 6 corn tortillas (more or less depending on size of pan). Then add half of taco meat and spread evenly on top of tortillas. Next add half of Ro*Tel dip to cover meat. I like to add some crushed chips on top of this just to give it some texture but this is optional. Then repeat all steps again topping it off with half a bag a chips and then shredded cheese.
Bake for approx. 15 min, or until cheese is melted and casserole is warm throughout. Serve with remaining chips and salsa.