QUOTE(Johnnynero @ Dec 18 2007, 04:05 PM)

Thanks.
I did read where she'll need to have a re-entry permit that would basically be good for two years... She doesn't plan on becoming a US Citizen regardless - she'd have to give up her Australian Citizenship and she doesn't want to do that. She can be a permenant resident without giving that up.
It does seem a bit confusing - surprise, surprise. Again, that's why we're getting started on this now. Are there any Aussies that have done this and if so, how did they go about it?
You missed a couple points, both the US and Australia allow for dual citizenship. Both of you, if you take the time to do it, could have citizenship in both countries.
QUOTE
Can I become a citizen of another country without losing my Australian citizenship?
Yes, provided the other citizenship is acquired after 4 April 2002.
Prior to 4 April 2002, Section 17 of the Australian Citizenship Act 1948 provided that adult Australians who did "any act or thing- the sole or dominant purpose of which, and the effect of which, is to acquire the nationality or citizenship of a foreign country shall upon acquisition cease to be an Australian citizen".
Any children under 18 also lost their citizenship, unless their other parent was an Australian citizen.
Section 17 did not apply to those who acquired another citizenship automatically or simply obtained a passport of a country of which they were already a citizen.
Further information on dual citizenship, Australian passports and consular assistance is available from the Department of Foreign Affairs and Trade.
http://www.citizenship.gov.au/automatic-ci...dual-citz.htm#bSimply establishing permanent residence outside of the US is enough to loose PR status in the US. In order to keep PR status in the US for those two years, you would basically need to keep a permanent address within the US.