I can't see you having any difficulty finding a job. I've been to 2 Expos already and as soon as you mention you're a nurse they practically try to stuff you in a suitcase there and then!
I'm just about starting to gather stuff for my nursing registration. I've 3 referees lined up and need to decide on a 3rd.
I've already given my CV to Drake Medox International, who emailed me a handy guide to NZ. I don't know whether to go with an agency or not and as soon as I get my reg sorted I'll email my CV to Waikato DHB, see what they can offer.
Which agencies asked you for money? I'd avoid those like the plague, to be honest. I don't see the need for us to be paying money when we're in such high demand!