The five-time world champions were well below their best in Germany and slumped to a quarterfinal exit against France.

That disappointing display was greeted with anger back in Brazil and coach Carlos Alberto Parreira was forced out after the tournament, with Dunga taking over.

The former Brazilian midfielder knows exactly what it takes to win the World Cup after captaining his country to glory in the 1994 tournament.

And although he has a galaxy of gifted stars like Ronaldinho, Kaka and Ronaldo at his disposal, Dunga is adamant his players must express themselves off the pitch if they want to be world champions again.

After watching his team demolish Argentina 3-0 in a friendly match at Arsenal's Emirates Stadium on Sunday, Dunga said: "Brazil always has quality. The important thing is we all work to the common good.

"It is not right for me to talk about a group I was not part of but I know that during the World Cup there were a few things did not go right and we wanted to change that.

"Everyone knows I'm a new coach so I have talked to the players to get their opinions. Many times we hear only from the coach and that is not good for the players.

"They have to be free to give their opinions. My decision will be final but I want to know how they feel about the direction of the team."

A double strike from Shakhtar Donetsk midfielder Elano and a superb solo goal from AC Milan's Kaka gave Brazil a convincing win in Dunga's second match in charge.

Brazil face Wales at White Hart Lane on Tuesday and Dunga, who hopes to have Ronaldinho back from a thigh injury for that match, knows the win against old enemies Argentina will give him time to rebuild his team.

He said: "We managed to win against a fantastic team. It is a big rivalry and every game between us is a war.

"That gives us time to work but we cannot relax because we know how much expectation there is on the Brazil team.

"I'm starting to feel more like a coach now. I'm not eating well and I can't sleep. But I was missing that adrenaline in my life. Now I have a challenge."

Argentina coach Alfio Basile endured a dismal first match in charge after returning for his second spell as national team boss.

His side looked good in possession but had no answer to a superb display from Real Madrid striker Robinho.

Basile said: "The result was not expected but it cannot be changed. It was my first match and I worked with the players for very little time.

"We only had 48 hours together. We need to work together for longer and that was reflected on the pitch.

"Brazil were very good and they didn't allow us many chances, but I'm not worried. This is just the beginning.

"The positive aspect is the attitude of the team. We wanted to win and attacked. That is what I want to see.

"With the quality of player we have I should be able to have the team playing how I want it in two or three months."

Argentine duo Carlos Tevez and Javier Mascherano were both below their best as they played for the first time since their surprise transfer deadline-day move to English Premiership club West Ham from Corinthians of Brazil.

But Basile has no doubts they will develop as players in England and he said: "They are already players of top international quality so they would be good to any team that buys them. That is why they are in the Argentina team.

"All I can say is whether they are at Chelsea or West Ham they will still be in the international team because they are players of the highest quality.

"I think the move will make them both better players because it is a very competitive league.

"It is one of the best leagues in the world and it's obvious that anyone who plays in an important league will grow as a player."