To win she has to beat those Australians.
Hamill (20), an athlete with a disability (AWD), is competing in the shot put at the Games.
She leaves on Saturday to begin her preparations for the event.
Hamill has mild cerebral palsy and spends most of her time in a wheelchair, though she can walk.
She is ranked third in the world in her event, but that does not guarantee she will win a medal.
"It's not the sort of event where if you throw it the furthest you win. You are in an event where people have different ranks of disabilities," she said.
"So they can score higher even if they don't throw as far as you. So that makes it pretty hard.
"I just have to give it my best and hope for a personal best.
"I think I just have to concentrate on my own throw and getting a good distance.
"There are a couple of Aussies in the field who are going to be pretty hard to beat."
Hamill has been in impressive form so far this year, clocking a personal best at the national championships in Christchurch, with a throw of 7m 43cm, which qualified her for the Commonwealth Games.
The AWD events will be on the same programme as the other athletic events at the Games, as opposed to the Olympics when the AWD events take place after the Olympics.
Mathew Lack, of Hamilton, is the other AWD competitor in Delhi for New Zealand and will compete in the 1500m.
Hamill was based in Invercargill but moved to Dunedin in July to work closer with her coach Raylene Bates, and was also taking a tourism paper at the University of Otago.
She went to the Beijing Olympics and finished in the top five in the discus, though she said she felt she could have done better.
She preferred the shot put as it required more strength.
The discus was a tad more technical.
Introduced to the sport while at Verdon College about five years ago, she uses a specially-designed throwing frame for her event.
She sits on the frame and then uses her legs to help put the shot.
It will be one of the more unusual pieces of sporting gear in the New Zealand equipment room.
Hamill said it was designed by herself and her father, and others provided input.
Her parents will not be in Delhi.
They are saving their pennies for London in 2012.
Before shifting to Delhi, Hamill will spend five days in Hong Kong getting used to the hot temperatures and training.
Her event is on October 6.
With the South enveloped in cold weather, she could not wait to head offshore.
"I love the heat. I'm really excited to be going.
"It's going to be great to be in the village and competing alongside all those other athletes."
