By SARA VANDEN BERGE The Cowboy Capital of the World PRCA Rodeo is set to take place Sept. 24-26 at The Fairgrounds Arena in Erath County, but first there’s Rodeo Heritage Week, an annual slate of exciting events that is now underway. Here’s a look at the official schedule. Friday, Sept. 18 6:30 p.m. Miss Cowboy Capital Rodeo Queen Contest-Horsemanship @Cowboy Church of Erath County 6:30 p.m. Ranch Rodeo Performance #2 @The Fairgrounds Arena 9 p.m. Rodeo After Party wit