Hi
When I started my application 18months ago I didnt have a clue either. I found an agent and gave them a run down of our situation etc etc at the end of the day they want your money and for you to apply through them so everything I asked they answered. They advised me on all the possible routes, before i paid them a penny. I didnt have to go with them after I got all the info BUT I did, they were great from day one they are called www.australia-migration.co.uk please remember though you dont have to go through them as I have now found them expensive. I was non the wiser and didnt know how to shop around. I now know, after applying for a 457 sponsored visa alone, whilst they processed our 176 permanent, that I could have done it myself if I was a little more wiser and clued up.
We have been in Perth for 5 weeks on our temporary visa and loving it, although the agent is still processing the permanent visa. It is possible, dont give up, and keep trawling the net!
Good luck
Michelle