I seem to be getting confused (not difficult) about what visa I need ..

Our plan is to go to NZ on a 30 month (i read about that on nzis site i think) work visa.. during that 30 months we'll decide whether it's for us and then apply for residency...

What visa do we need...?
Do we need to do the EOI thing?
Do we still need points?

I thought I had it sussed but now i'm not sure... :?