ARLINGTON - Armed with a week off to rest and repair, the Dallas Cowboys host a red hot Green Bay Packers squad in an NFC playoff game on Sunday afternoon.  At this point of the season, the loser goes home, and is done until next summer's training camp.  CHANNEL 5's Joel Villanueva is in Arlington for the game.  He reports on the strengths of a Cowboys' team that starts first-year players at two key offensive positions.