I doubt you will be in luck. Inter-NZ bandwidth is mostly free a lot of money could be saved using proxies/NZ VPN services. I would also expect TV on demand et al to block known proxy server/VPN ips.
You're probably best off setting up a VPN server on your own system in NZ and asking turn it on for you.
(EDIT: It'll be agonizingly slow too - limited by your upload speed)