1. Melt butter in a medium skillet over medium heat; add bell pepper and next 2 ingredients, and sauté 4 minutes. Stir in corn and Creole seasoning, and sauté 3 minutes. Remove from heat, and stir in parsley and vinegar.
2. Bring Old Bay seasoning and 5 qt. water to a boil, covered, in a large stockpot. Add potatoes, and cook, uncovered, 10 minutes. Add sausage, and cook 3 minutes. Add shrimp; cook 3 minutes or just until shrimp turn pink and potatoes are tender. Drain.
3. Thread 1 potato, 1 shrimp, and 1 sausage piece onto each skewer. Arrange on serving plates or a long shallow platter. Spoon corn mixture over skewers.