The full story is here
http://www.stuff.co.nz/stuff/0,2106,3152288a10,00.html
but it pretty much says that we will pledge to give them $20 mill a year for 3 years, extending it to 5 if nessecary.
That seems like quite allot given the size of our country, and when we have other areas that could use the money. I didn't realise we had $100 mill just lying around.