Sorry beg to differ, the New Zealand Herald is not available throughout the country, each area has it's own daily paper, although the three largest cities cover the surrounding area. None of the South Island or lower North Island towns get the New Zealand Herald.
One place they could look is the Telecom White Pages. Unlike England you can put in the surname and initial and ask it to look throughout the country. the webpage is
www.whitepages.co.nz. I tried looking for an A Rogers in Auckland and came up with this one that also has a J for the wife.
Rogers A B & J A, 5 Laings Rd Bucklands Beach Auckland 0-9-534 1222
It's also possible to look at each individual island or each individual telephone area.
Another avenue is the NZ Woman's Weekly letters page. They have a special page for finding lost relatives and friends.
Hope this helps somewhat. Let me know if I can help further.
Regards
Suepernz