Ms.Sally, with a work visa valid for march 2011, you can apply for a China visa there. but you never mention where you reside in NZ. Check the consular districts first if you need to submit your visa application to Chinese embassy in Wellington or consulate in Auckland.
For the payment, only bank cheque or company cheque which made payable to "Chinese Embassy" are acceptable. Do NOT include any cash with your application. You should also enclose a self-addressed pre-paid return courier bag or envelope with applications for the safe return of passports.