Steak And Pepper Kebabs

Name: Steak And Pepper Kebabs
Ingredients: KEBABS:; 2 cloves garlic, minced; 1 tbsp dried oregano; 2 tsp reduced sodium soy sauce; 1/4 C fat free plain yogurt; 1 lb top round steak, cut into 1 cubes; 1 red onion, cut into 8 wedges; 2 red bell peppers, seeded and cut into 1 x 2 pieces; 1 orange bell pepper, seeded and cut into 1 x 2 pieces; 1 green bell pepper, seeded and cut into 1 x 2 pieces; SAUCE:; 1 C fat free plain yogurt; 2 tbsp fresh dill leaves; 1 scallion, green part only, thinly sliced