Here's the list of Skilled Jobs (Appendix 6)
http://www.immigration.govt.nz/opsmanual/35165.htm. The number by each job title is the ANZSCO number. If you go to the ANZSCO site
http://www.abs.gov.au/AUSSTATS/abs@....01.2&num=&view and put the number in the Search box there, you'll be taken to the page where you'll see the official ANZSCO job description.
As you'll see here
http://www.abs.gov.au/ausstats/abs@....8?opendocument, ANZSCO is organized into major groups of jobs, made up of clumps of sub-major and then minor groups. All the careers within a minor group will be very like each other, with just slightly different specialisms, then there will be more variations within the sub-major group, and so on up. So it will probably be best to look in the minor group first for the comparable job description you need, and only then go to the sub-major group if you have to.