I checked with Australian Embassy web site in bangkok, I think they got this service available, tried to call them but no luck, hopefully tomorrow. thanks Davo!
I still can not exactly figure out how to get step 1 & step 2 done here in Thailand, I just can not find information online, if you don't mind me asking where did your get first authentication done, was it in Aussie embassy in Nevada or any other place?
I was told I have to go to Thai Embassy in Australia for the authentication of the marriage but yup I am planning to go to Thai immigration in Bangkok first and I guess take it from there, based on what I read online about Non Imm visa, looks like I need to organise it first and then open up a bank account, deposit THB400K for at least two months before applying 1 year visa. I tried call the Thai embassy in Australia several times but no luck, what I still can't figure before translating the marriage certificate into thai, it looks like I have to also register/authenticate the marriage in a thai embassy ?