lol! ok from my knowledge....

Once you have had your year back packer visa which can now be extended to 2 years if you have done 3 months harvest work in the first year from memory which isnt much good to you as you have used your year visa and at the time they didnt have that option.

What you would be looking at is company sponsorship or a secondment. My g/f's step bro and his g/f did that as they work for KPMG. They came to the UK for 3 months and then travelled for 3 months on a secondment scheme.

Sponsorship is seperate to what you were on.

Your visa enabled a maximum of 9 months work in the 12 month period in Australia with a maximum of 3 months in any one job. That is the rule of that visa.

Should help you with some bits and pieces.

http://www.immi.gov.au/

Infact if you have been here and behaved yourself, it could work favourably as you have exposure to the culture and aware of the conditions around you.

Good luck mate, hope you come back