Stir rices into boiling water & add salt. Simmer covered for 40 minutes.
Heat margarine in a large skillet & saute onions & celery till golden. Add apple & saute for 5 minutes. Stir in cooked rices with juice, scallions, currants & spices. Season to taste with pepper.
Saute mixture for 5 minutes, stirring. Just before serving, heat through, add more liquid if necessary & stir in parsley & nuts.