The biggest schools in college sports are about to get a chance to make their own rules.The NCAA Board of Directors voted, 16-2, on Thursday to approve a historic package of changes that allows the five richest football conferences ? the ACC, Big Ten, Big 12, Pac-12 and SEC ? to unilaterally change some of the rules that have applied to all Division I schools for years. Representatives from those leagues representing 65 universities will also benefit from a new, weighted voting system on legislation covering the 350 schools in Division I.