In skillet, fry tortillas, one at a time in 1/2-inch hot oil. Cook just until pliable;using tongs and fork, partially fold. Continue cooking until crisp;remove. In saucepan, brown beef;stir to separate meat. Add soup. Heat;stir now and then. Fill each tortilla with about 2 1/2 tablespoons meat mixture;top with lettuce, tomato, and cheese. Makes 18 tacos.