Cook pasta according to package directions. Drain; keep warm.
Meanwhile, cut the salmon into thin bite-size strips; set aside.
For sauce, in a large skillet cook the green onion and garlic in margarine or butter until tender. Add salmon and cook for 1 minute. Stir in whipping cream, snipped or dried dill, lemon peel, and pepper. Bring to boiling; reduce heat. Cook, uncovered, at a gentle boil about 5 minutes or until the sauce thickens slightly. Remove from heat. Stir in Parmesan cheese.
Arrange the pasta on individual plates or a large platter. Spoon the sauce over the pasta. If desired, garnish with fresh dill sprigs. Makes 4 main-dish servings.