Prepare rice according to package directions.

Heat oil in a large heavy saucepan over medium heat.  Add chicken and cook 5 minutes.  Add garlic and onion and sauté 2 minutes.  Stir in chili powder, and corn.  Sprinkle flour over mixture and stir well.  Add milk, broth and chilies.  Increase heat to high and bring mixture to a boil, stirring constantly for 1 minute.  Reduce heat, stir in prepared rice mix.  Cook and stir 2 more minutes, or until slightly thickened.  Serve topped with cilantro.