Scrub, pierce and bake potatoes in 400 degree oven for 45 minutes. Allow to cool 10 minutes, or until easily handled. Leave oven on.
Dice potatoes into 1 inch cubes, and place in an 11x7 or 8x8 greased pan.
Cook ground beef until fully done, then add water and seasoning mix. Simmer 3-5 minutes, according to package instructions.
Layer taco meat on top of potatoes, then pour salsa over that.
Sprinkle cheese on top of meat and salsa, then place back in oven for 30 minutes, until cheese is fully melted and golden. Serve immediately.