Boil shells according to package directions
While pasta is being prepared, brown ground beef and drain fat. Stir in package of taco seasoning and water. Bring to boil, reduce hear and simmer for 5 minutes, stirring occasionally.
Add salsa, black beans, drained pasta and the Velveeta Cheese sauce packet to the beef mixture.
Stir until all ingredients are blended throroughly. Cook on low to medium heat for 5 minutes, and then serve.