In A Large Nonstick Skillet, Saute Onion And Garlic In Butter Until Tender. Add Pork Chops; Brown On Both Sides. In A Small Bowl, Combine The Tomato Sauce, Wine Or Broth, Oregano And Pepper; Pour Over Chops. Bring To A Boil. Reduce Heat; Cover And Simmer For 10-15 Minutes Or Until Tender.