Taking a look at what must change for the Cowboys to improve to 2-1. Fresh off an exciting victory in Week 2, the Dallas Cowboys are now just a few days away from their first divisional matchup of the season against the New York Giants. While things went well enough for the Cowboys to win last Sunday, some things will need to change if they want to have continued success against the Giants on Monday night. If Dallas wants to walk out of New York with a win, here are three players they need to use more this week. WR…