A North Texas development group aims to bring the Dallas-Fort Worth area its first year-round winter sports theme park. Bearfire Group L.L.C., formed in 2004, says it has put together a team of professionals, including Orlando, Fla.-based Baker Leisure Group, Long Beach, Calif.-based Kirk Design Inc. and Burbank, Calif.-based Thinkwell Design & Production, to design and develop the Coolzone Winterplex.