Bring A Large Pot Of Lightly Salted Water To A Boil. Add Pasta And Cook For 8 To 10 Minutes Or Until Al Dente; Drain And Reserve. In A Small Saucepan Over Medium Heat, Warm Oil, Butter, Reserved Clam Juice, Garlic And Parsley; Stir And Simmer For 5 Minutes. Add Clams And Salt And Pepper To Taste. Pour Over Pasta And Toss With Parmesan Cheese; Serve.