Dragons star Ben Creagh yesterday revealed his unwavering belief in winning a premiership with St George Illawarra is behind his decision to stay with the club for the next four years.Creagh yesterday officially signed with the Dragons until the end of 2013, on a contract believed to be worth about $320,000 per season.In career-best form, Creagh has been part of the Wayne Bennett revolution this season which has seen the Dragons surge to second on the NRL ladder.Preparing for tonight's big game with the Bulldogs at Kogarah's WIN Jubilee Oval, Creagh said he was intent on delivering the Dragons their first title since 1979."Definitely, I'd love to win that premiership and hopefully we can do that," he said."I believe we can."We've been close a few times; back in 2005 and 2006, and we all remember how disappointing they were."That's my goal, to do it over the next few years."Creagh has been outstanding for the Dragons this year and is squarely in the mix for NSW when the team is named on Monday week for the State of Origin in Melbourne.At 24, Creagh has already played for Australia when he was part of a 2005 Kangaroo tour, making his international debut against France.He has also been 18th man for NSW, but is yet to play Origin.In the past two seasons he has struggled at times with injury and form, but under Bennett he has returned to his damaging best running off halfback Ben Hornby on the left edge.Creagh admitted he was excited that his future was locked in to play under Bennett."He's been a big influence and I'm looking forward to still being here with him," he said.An Illawarra junior, who started playing rugby league with University of Wollongong at the age of 13, Creagh claimed he never really considered other offers.It is believed Parramatta had shown significant interest in luring Creagh to the Eels next year."I know what club I want to be at and I know where I want to be playing," he said."For me it was the longer the better in terms of contract."