Creamy Vegetable Pasta

3 cup sliced mushrooms
3 cup sliced zucchini
3 cup diced red or green peppers
2 Tbs butter or margarine
8 oz cream cheese
1 cup milk
1 tsp dried oregano
1 tsp salt
8 oz spaghetti cooked and drained

In a large pan over medium heat, fry the vegetables in a little oil until tender. Turn heat to medium low, and stir in cream cheese, milk, oregano and salt. Continue stirring until a smooth sauce forms. Toss with spaghetti and serve immediately.