Jessica Weiss's dashboard

How can I continue to "message all members" of a group that has surpassed 5,000 people? I run a facebook group for the International Journalists' Network (IJNet). We provide news and opportunities to journalists throughout the world, many who live and work in countries with little or no history of press freedom.

Our group members have come to rely on my weekly messages informing them on upcoming deadlines and opportunities they can apply for. When our group hit 5,000 people we were no longer allowed to do that ... now everyone is sad/mad. HELP!? Can we upgrade our account or split the group into 2 mailing lists for the purpose of emailing direct messages? Posting to the wall is just not as effective!!

THANK YOU ALL! :)
Jessica