Chilaquiles: another breakfast of champions

My favorite breakfast in Mexico, Chilaquiles - quite possibly the best use of stale tortilla chips, ever. I have no idea how this is made. I vaguely suspect heating the day-old chips in some sort of smoky chile sauce. The Chilaquiles I've had often have bits of queso fresco crumbled in and hidden, half melted, in the soft yet crunchy layers of chips. There's also sour cream, and perhaps even some onions. And eggs, on the side, of course.

I have to learn how to do this. Does anyone have a good recipe?