I found some information at www.cricinfo.com. They also have their own personal website but I found more up to date info on cricinfo. From most of what I have been reading, they seem like a team that kind of flies under the radar.
According to Wiki, when the BCCI began it's rise to financial power over cricket that they were able to convince other boards not to pick players who had joined in the Twenty20 Indian Cricket League. Players had to choose one over the other and NZ lost a lot of good players as a result. They have been struggling to rebuild ever since. One notable player who has been with them since 1997 is Daniel Vettori.