If you want a vacation or a visit to the New Zealand group, unless you are a New Zealand citizen, you need to obtain an New Zealand visa before you travel.
This type of visa you need depends mainly on what you would do in New Zealand, want to stay in country longer, but you may have, or New Zealand Electronic Travel Authority (Visitor) or tourist visa or a Sponsored Family Visitor visa.
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You must cover the entire event in a period you want to stay in New Zealand because there once, it is possible that you will not be able to extend their visas.
Electronic Travel Authority (ETA) (visitors) sounds – electronic and could not get a stamp in their passport or label, but do not worry, New Zealand immigration officials will have their visa records.
You can apply for an ETA (Visitor) remains less than three months if you are outside Australia and hold a passport from one of the 34 eligible countries.
The New Zealand Government Department of Immigration and Multicultural Affairs website you will find a whole list of them, but it covers many countries of Western Europe and the Scandinavian countries, the United States and countries of the Far East.
There are special arrangements for the list of eligible countries. ETA (Visitor) visa can be obtained through a travel agent or the airline directly online or in their country of residence Australian visa office. There is no fee for this type of visa, unless you apply through the Internet.