Fettuccine with Shrimp Sauce Recipe

1 lb. small or medium shrimp, unshelled
4 tbls. butter
4 tbls. olive oil
1 tbls. finely chopped scallions
3 tbls. brandy
¼ c. dry white wine
3 tomatoes, peeled, seeded and chopped (I just chopped them and it was fine)
Pinch of salt
Pinch of cayenne pepper
1 C. heavy cream
1 lb. fettuccine, cooked
garnish with fresh, chopped parsley, if desired