Michael Vaughan on Sunday replaced Andrew Flintoff as England captain to lead his side in the forthcoming one-day cricket tri-series starting on January 12.
After Flintoff was stripped of the captaincy following England's 5-0 whitewash in the Ashes series, the first challenge for Vaughan, who was out of action for a year after a knee surgery, would be to instill confidence in the side.
"I am sure they will be a little bit affected by what's happened over the last few weeks, but my job as the captain is to challenge them and to try and raise the confidence," Vaughan at a press conference in Sydney on Sunday.
"I will try to get them to go out on the cricket pitch and express themselves so we can produce some good results," he added.
Vaughan, who led England to the 2005 Ashes win, has been in Australia preparing for the tri-series, also involving Australia and New Zealand, and has played some practice games to assess his fitness.
"It's a good feeling to be back playing, it's great to be in the squad and an added bonus that I am reinstated as the England cricket captain in circumstances which are very different to when I first got the job," he said.
"What I have now is two-and-a-half years of experience. So I feel I am in a good position to carry on as the captain.
"The team have had a real tough time. Australia played good cricket and we realise that we have made a few mistakes and not played to the standard of what we expect," Vaughan, who last played an international match in the Lahore Test against Pakistan in November 2005, added.
Vaughan will resume his international career by starting off with Tuesday's Twenty20 match against Australia in Sydney.
On Flintoff's captaincy, Vaughan said he had a lot to contribute to the England cricket team.
"Andrew Flintoff can play a huge leadership role as a player as he did when I was captain before," he said.
"I just want to see him contributing with both bat and ball, in the field and in the dressing room, because that's where he leads from the best," the new England captain said.
England chairman of selectors David Graveney insisted that Flintoff had not been sacked as captain.
"A number of occasions over the past few months, even before we came to Australia, Andrew has stated as seeing his role as basically keeping the seat warm for Michael Vaughan and I think that has to be understood," he said.
"So it's not a question of being sacked, it's just a question now that Michael is now fit enough to resume his appointed role," he added.