Preheat grill to medium heat. Cut potatoes in half. Cut zucchini and sausage same width as potatoes. Skewer potatoes, zucchini and sausage. Repeat for each skewer.

Place skewers in dish and cover with Italian dressing. Marinate 5 minutes.

Place skewers on grill and cook 5 minutes on each side, or until potatoes are done. Remove from grill and serve.