Five weeks after the one million dollar reward for information leading to the conviction of Janine's murderer was announced, Homicide Squad Commander Det Supt Scott Cook said investigators "have received great support support from the community."

He thanked the community for its ongoing support as the re-investigation into the disappearance and suspected murder of Janine continues, under Strike Force Toko II.

Janine Vaughan, aged 31, left a local nightclub on Friday, December 7 2001, and was last seen about 4am, getting into a bright red sedan on Keppel Street, Bathurst. She has not been seen or heard from since.

Detective Cook said police are committed to getting justice for Janine and providing answers for her family.

"We will continue to follow up all lines of inquiry and use all the resources at our disposal, including advancements in forensic technology, to piece together Janine's last movements.

"Since the announcement of the one million dollar reward for information, we have received great support from the community; however, we continue to call on those who may have information to come forward.

"It's never too late - your information will be treated in strict confidence."

News of the one million dollar reward has given Janine's family renewed hope that Janine's killer will be brought to justice.

Ms Vaughan's sister Kylie Spelde and brother Adam Vaughan joined Homicide Squad Commander, Detective Superintendent Scott Cook, at police headquarters in Sydney when the reward was announced, saying they hoped it was enough to flush out Janine's killer.

"We are very excited. It's the first time in a very long time we've felt this way," Mrs Spelde said.

In what could be a major breakthrough, police also revealed they will re-examine a car belonging to one of the people of interest in the case using new DNA technology not available to investigators 10 years ago when the vehicle was seized.

Anyone with information can contact Crime Stoppers on 1800 333 000.