Hi,
you find all information you need on the Physioboard's website:
The Physiotherapy Board of New Zealand > Registration - Overseas Qualified Physiotherapists
There are even application guideline notes: http://www.physioboard.org.nz/docs/A...March_2011.pdf

However, I do not believe that the job situation here is any better than in England, especially if you have no work experience.

Good luck,
Fyzzio