A few hundred tickets are available for the Packers’ preseason game against the Jacksonville Jaguars at Lambeau Field tonight.   The Packers make their 2007 national debut tonight, with the game televised on Fox.  Tonight is the 47th Bishop’s Charities game.  Because of injuries, head coach Mike McCarthy plans to limit exposure for the starters in tonight’s contest.  The Jaguars, however, are expected to play most of their starters through the first three quarters.