Green Bay Packers guard Josh Sitton is on his way to Honolulu and the Pro Bowl.  A first alternate on the NFC squad, Sitton will replace San Francisco guard Mike Iupati who is on his way to the Super Bowl with the 49ers.  Sitton and Jeff Saturday will represent the Packers on the NFC squad.  Aaron Rodgers and Clay Matthews both withdrew from the game because of injuries.  Mike McCarthy and his coaching staff will coach the NFC squad at Sunday's game in Hawaii.