Looking for Theatre work

I am enquiring about how to go about gaining employment next year within the theatre as a production assistant etc... I currently work at Sony BMG as Assistant to the Producer working on the music program "The Music Jungle" I have studied Film and Television production at North Sydney Tafe and at the New York Film School, I have also completed many acting courses and I know my stuff. I am interested in getting involved more in production and producing and actively promoting theatre productions etc, any information would be greatly appreciated. Thanking you