Fill 3-quart saucepan 2/3 full of water; heat to boiling. Add Pasta. Gently boil, uncovered, 12 minutes, stirring occasionally; drain. Rinse with cold water to cool; drain well.
Meanwhile, in large bowl, combine Seasoning mix from packet, sun-dried tomatoes and oil, water, black pepper and red pepper flakes. Add remaining ingredients; stir in cooked pasta. Refrigerate at least 1 hour to blend flavors.