Hi Cazzie,
I'm not sure if you ever check back here or get this message, but I saw your post earlier when I was looking for something else and saw "New Zealand" and went for a look.

There is a Peripheral Neuropathy Support Group on the North Island but it's way down in Lower Hutt.

I found that on the New Zealand health and disability support and information groups for rare and common disorders website.
http://www.nzord.org.nz/support_groups

They have an email. Maybe you could contact them and ask about your area.

This is the website for the Neurological Foundation of N.Z. and it appears to come from Auckland Hospital so that may be a place to check too.
http://www.neurological.org.nz/

I hope you're able to find some support over there.
Ask at Auckland Hospital.

- Lara (Aussie)