1.Bring A Large Pot Of Lightly Salted Water To A Boil. Add Fettuccini And Cook For 8 To 10 Minutes Or Until Al Dente; Drain. 2.In A Large Saucepan, Melt Butter Into Cream Over Low Heat. Add Salt, Pepper And Garlic Salt. Stir In Cheese Over Medium Heat Until Melted; This Will Thicken The Sauce. 3.Add Pasta To Sauce. Use Enough Of The Pasta So That All Of The Sauce Is Used And The Pasta Is Thoroughly Coated. Serve Immediately.