About 450 riders on horseback took a 40 mile trip back in time earlier this month, as part of the 2006 Great Florida Cattle Drive. For four days, lifelong ranchers worked alongside weekend horse enthusiasts, driving cattle from south of St. Cloud to Silver Springs. As Justin Gilken of the Palm Beach Post reports, riders of all levels say they cherished the chance to experience a way of life in Florida that is rapidly disappearing…