In sauté pan melt butter over medium low heat. Add sausage and cook slowly, stirring occasionally until lightly browned. Cook pasta according to package directions. Add cream and wine to sausage. Increase heat to medium high and bring to a boil. Boil gently and cook, stirring occasionally until sauce is slightly thickened (about 5 minutes). Mix in drained rigatoni and 1/2 cup cheese. Serve at once, adding more cheese if desired.