The resource links for what you need.
Notice of intention to Marry (NOIM): 
Queensland Statutory Declaration:
Commonwealth Statutory Declaration:
Queensland Registries of Births, Deaths and Marriages.
Which has links to interstate and overseas: www.justice.qld.gov.au/bdm/home.htm
Passports office (change of name info): www.passports.gov.au/web/namechange.aspx
Spouse, Partner, fiancé Visa (general information): http://www.immi.gov.au/extend/permanent-spf.htm
I will be happy to supply other links upon request.
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