I know nothing about this stuff, so please bear with me...

Okay so I'm going to need a new cell phone soon and I want a blackberry bold (seems to be the best of the blackberries and no thanks I don't want an iphone). However, I'm going to be needing it for a year in New Zealand... but for some reason their prices are THROUGH THE ROOF, regardless of whether you purchase the phone with a plan or not.

So my question is, would it be possible to buy the phone in the States where it's cheaper and use it like normal in NZ? Or if I buy it in NZ, would I be able to use it elsewhere after my year there is up?

Thaaaaaaanksszszsz.