This time I do not propose to write a long essay as I view you do better to read my blog at http://au.blog.360.yahoo.com/blog-ijpxwMQ4dbXm0BMADq1lv8AYHknTV_QH and my website at http://www.schorel-hlavka.com to get some learning, as your question about the Republic issue in itself to me seems to be something that indicates you do not have a proper understanding of the constitutional concept existing since federation and the powers within that constitution.
In particular my blog may be of interst.
Just to make it clear, the Constitution does not permit any notion of republicanism and anyone who promotes the Commonwealth of Australia to become some purported Republic doesn't know what he/she is talking about. Can I be any clearer then that?