Hello Gordon.
I have had no need to delve into the NZ registration recording systems, but many have reported on the NZ forum, of their experience and knowledge. To call the posts up, take the following steps:-
#1 Click on, SEARCH, on the black/brown bar above.
#2 In search for box write - registration numbers.
#3 Click on, Choose a board, on the blue bar.
#4 Click on, Check All box, bottom left of page [all black box ticks disappear]
#5 Scroll up to Mid right column and click on the 3 NZ board boxes under, Research other countries.
The three boxes should turn black and contain a tick. [NZ, Resourses & Completed]
#6 Click the brown search box at the bottom of the page.
PS EDIT research to REGISTRATION. Search click BLUE to brown.
PPS. Above instructions are for an advanced search, not a simple search, using the search box at the top of the page.
Alan.