Hunter has won two.
Fred Thompson and Duncan Hunter, two conservatives who both campaigned in the Cowboy state, each won two delegates. Ron Paul, a Texan who also campaigned there and beat Giuliani in Iowa, won none.
http://latimesblogs.latimes.com/washington/2008/01/mittwinsone.html
BTW, in a little noted bit of trivia, Ron Paul did carry one Iowa county, to Huck's 77 and Mitt's 24. Said county is best known in Iowa for its institution of higher learning, Maharishi University. It looks like Paul really turned out the transcendental meditation folks.
Sorry, but according to the last update at 6:45 pm EST, Thompson got 3 delegates, and Hunter only got 1 delegate.