Found this website the other day- whilst listening to the ABC radio series called 'Rabbitting On'.  Well worth reading some of the stories, but found this site for the Australian Wildnerness and Conservation Parks and found a lot of things of interest, and in particular - tha application forms for caretakers in a couple of their parks.  Most are on a voluntry basis, and you are just responsible for basic maintenance and helping with the wildlife conservation - which has huge appeal to us - but the great thing is that you get at least 3 weeks free accommodation with everything thrown in - (all except food I think)...but well worth a look...

heres the link

http://www.australianwildlife.org/Home.aspx

Cheers