Bring water to a boil; stir in barley and quarter teaspoon salt. Reduce heat. Cover; simmer 50 to 60 minutes or until barley is tender, stirring occasionally. Drain; cool. Transfer to a large bowl. Add kidney beans, tomatoes, parsley, green pepper and green onions; mix well. Combine lemon juice, oil, remaining half teaspoon salt and pepper; mix until well blended. Pour over barley mixture; toss. Chill 3 to 4 hours or overnight; toss before serving. Serve over lettuce leaves, if desired. *NOTE: To substitute half cup Quaker Scotch Brand Quick Pearled Barley, decrease water to 1- half cups and simmer time to 10 to dozen minutes. Proceed as recipe directs. NUTRITIONAL ANALYSIS per serving: * calories 143 * carbohydrates 16 g * protein 4 g * fat 7 g * calcium 33 mg * sodium 110 mg * cholesterol 0 mg * dietary fiber 4 g