Rinse and hull strawberries or rinse raspberries under cold running water gently. Drain well. In a glass bowl, fold together yogurt and berries. Melt chocolate in a double boiler with heat on medium. Place berries and yogurt in individual bowls and drizzle with melted chocolate. For a more formal presentation you may want to pour a pool of yogurt on a plate and place berries on top of pool. Drizzle chocolate over berries. Serves 2.