By TIM GRAHAMPalm Beach Post Staff WriterSaturday, February 23, 2008INDIANAPOLIS — Forget everything you've heard or read about the Dallas Cowboys being interested in trading for the Dolphins' No. 1 draft pick.Cowboys owner Jerry Jones, speaking exclusively to The Palm Beach Post, shot down the theory that has been a popular topic on message boards and sports call-in shows."We haven't talked about that at all," Jones said Saturday afternoon at the NFL Scouting Combine.A deal sounded plausible because the Cowboys have the assets to pull it off, and Jones is said to covet Arkansas running back Darren McFadden, projected by many talent evaluators as the best skill player in this year's draft class.Jones is an Arkansas alum and one of the Razorbacks' most passionate boosters.The Cowboys are the only team with multiple picks in the first round. They hold the 22nd and 28th selections.But it would be more prudent to choose twice at the back of the first round than to gamble $30 million or so in guaranteed salary."That's a high-value, high-cost pick there," Jones said of what it would take to obtain the Dolphins' consolation prize for finishing 1-15. "That pretty much, when you start looking at the numbers involved with that pick, that kind of diminishes your interest." The Oakland Raiders gave last year's No. 1 draft pick, quarterback JaMarcus Russell, $32 million in guaranteed salaries.Jones agreed with the sentiment the Cowboys can accomplish their draft objectives by remaining where they are.Running back Marion Barber is slotted to be the 2008 starter, and if the Cowboys need to replace free agent Julius Jones as expected, they will have a deep talent pool to fish from at the position.Jerry Jones also suggested the only reason to move up that high in the order would be to take Boston College quarterback Matt Ryan, who is considered franchise material."Our quarterback is a piece of our team that we're very proud of," Jones said, referring to Pro Bowler Tony Romo, "so we're not in that business."