Kia Ora ( Hi in Maori) Gail
I am Canadian, have been living and working in NZ since 1998 and I am currently on the NP in PHC which is probably close to what you are referring to family practice. I will let you contact the NZ Nursing Council for all the "officialisation" and recognition of your education as it differs from every country. Their webiste is quite comprehensive and with today's easy email, you should not find it too difficult. However you might want to contact Mary Gagan at University of Auckland. Mary is from and trained in the US as an NP and has also been working as an NP in NZ in PHC. She might be able to enlight you on the "hills and valleys" of her journey! One of the thing you might have to consider is that the NP profession is relatively new to NZ and general practices are private businesses. By definition there is a bit of resistance from GPs to hire NPs as there has been little evidence that in increases the business. There are a bit more opportunities in rural areas where there is a lack of GPs and where some of the PHC clinics are administered through Trusts or PHOs or DHBs. Again it might pay that you get your head around the health system in NZ and all the funding/organisations so it gives you a clear picture of what to expect and where to direct your research.
Hope this helps,ml