Over medium heat, cook ground beef in large skillet until brown. Drain; rinse. Stir together seasoning mix from dinner kit, refried beans, water and half the ground beef. Cover with a paper towel and microwave on HIGH for 2 minutes.
Bake taco shells at 200 degrees for 5 minutes. Wrap tortillas in paper towels and heat in microwave oven on HIGH until warm, about 10 seconds per tortilla.
Spread 2 tablespoons of bean mixture on tortilla. Wrap tortilla around outside of taco shell. Fill taco shell with 2 tablespoons meat, cheese, olives, tomato and lettuce. Top with taco sauce.