好像无论在国内（中国）在国外（澳）官方都不承认私下收养

程序方面

http://www.community.nsw.gov.au/docswr/_assets/main/documents/adoption/relative_overseas_adoption_fact.pdf

http://www.community.nsw.gov.au/parents_carers_and_families/fostering_and_adoption/adoption/want_to_adopt/intercountry_adoption.html

法律方面
http://www.ag.gov.au/www/agd/agd.nsf/Page/IntercountryAdoption_Currentintercountryadoptionprograms

您老有8万美元净家产吗？：）