Just Found: Flowchart Explaining What We're Going Through.

I'm not 100% certain everything on this is accurate (it says we'd get an interview before our ITA, but that didn't happen) but overall it's a very good explanation of the system:
In fact, the page it comes from has some good stuff on it. We've decided not to go with Immigration consultants, but I sometimes wonder if that wouldn't have been simpler.

http://www.proteapacific.co.nz/new_zealand/nz_detail.asp?id=12&bhcp=1