Preheat oven to 350 degrees F (175 degrees C). Bring a large pot of lightly salted water to a boil.
Add pasta and cook for 8 to 10 minutes or until al dente; drain.
Heat cheese sauce in microwave, 1 minute. In 8 x 8 inch baking dish, combine cooked pasta, cheese sauce, sliced frankfurters, Parmesan and oregano. Top with crumbled crackers and bake 10 minutes.