Hi SnoMo and welcome to V-Flyer. I'm guessing you don't post much on the internet? Netiquette dictates that posting in ALL CAPS IS SHOUTING and is therefore perceived negatively by other internet users. If you could bear that in mind it'd be cool.
The chances of you being able to get an Upper Class return flight to New Zealand are zero as Virgin don't fly there. You could conceivably use your miles to get a flight with ANZ (see
the Virgin Website) but as you say these are rare. The best bet is to call Flying Club and have them investigate availability. The thing to stress is flexibility. ExpertFlyer shows availability of ANZ reward flights and shows for example that the NZ1 on 5th Sept has one available seat. So you could use your free Expertflyer credits to look for suitable dates.