Is it possible for a woman to be Imam al-jama’a for women?

I know that majority of Shia Marja’al-Taqlid considered it as a permissible issue for women to stand as the Imam-al-Jama’ah for women. (Not for men)/www.islamquest.net But I’d like to know if it is possible for a woman to be Imam al-Jama’a? ( for wajib prayer(Salat)) *Note: I am looking for the viewpoint of Sunni brothers.*