IRVING, Texas -- Dallas Cowboys owner Jerry Jones proved Thursday he was serious about his vow to change philosophy, hiring a proven NFL coach in Bill Parcells, promising to share power and even admitting he has made mistakes.

"I don't want to get into details in my change in philosophy; I frankly think that Bill sitting here says a lot about how much this organization is willing to win,'' Jones said at a news conference introducing Parcells as the sixth coach in team history.

As the team's general manager, Jones has insisted on power in personnel decisions and a heavy involvement with players and coaches. But he said he is eager to share power with Parcells to return the Cowboys to the Super Bowl.

"I've made a lot of mistakes, you know I have,'' Jones said. "I am not going to grow careless with this relationship,''

He declined to specify mistakes, but the team that won three Super Bowls in four years under Jones in the 1990s hasn't had a winning record since 1998. The Cowboys have also made questionable draft picks and free-agent signings and posted three straight 5-11 seasons under coach Dave Campo, who was fired Monday.

Jones and Parcells -- who demanded power over personnel decisions while coaching the New England Patriots -- agreed their partnership will include talking through any disagreements.

"I can assure you with the years of experience he's got and the success he's had, his input on the personnel decision is going to be major input,'' Jones said. "It's going to be a partnership basis, and I'm very comfortable with that right now.''

Parcells said he's comfortable working within a partnership in which Jones has final say.

"I understand firstly that I'm an employee of the Dallas Cowboys and we have an order in place,'' Parcells said. "I do know that if it were ever to come down to where there were disagreements, which I don't think there will be, that the ownership will prevail in that regard.''

With two Super Bowl rings and a record of 138-100-1 over 15 seasons, Parcells is the first of the four coaches hired by Jones with NFL experience.

Parcells also is the first coach since Jimmy Johnson was hired in 1989 who will be allowed to bring his own staff. Every coach since Johnson -- Barry Switzer, Chan Gailey and Campo -- had to work with assistants already in place or hired by Jones.

"As far as the numbers on his staff and the coaches, he certainly has prior approval on my part,'' Jones said. "I want him to have coaches that can help him get the job done.''

With his four-year, $17.1-million deal, Parcells is the first coach under Jones to make more than $1 million a year.

Several NFL analysts say there's no way such strong-willed men can work together, but Jones and Parcells say they can return America's Team to its winning ways.

"I'm going to do everything within my power, my effort, my heart, as well as my resources to make this thing go,'' Jones said. "We're going to try to make something happen that we'll all be proud of.''

Not everything in Jones' philosophy is changing. He says he has no plans to stop his well-chronicled visits to the sidelines.

"Will I be allowed on the sidelines after games? Yes,'' Jones said. Then after a pause and with a smile he joked, "It's my sideline.''