I was looking for NZ images of the sea and land for the KB04 presentations and I came across this site: New Zealand Photos and Images by Vonnagy.
Some really nice photos of NZ – including some local Waitakere ones – AND you can download them and use them for free. (If you use them on your web site then he asks that you add a link back to his site).
The images are fairly small (600×400) but don’t have any watermarks etc. Also if you want a higher resolution image – say for a print – you can obtain one from him too.