This is the poser setup that I use for all of my mounted units. It uses the Poser horse and Kinboat's paperdoll. Neither model is actually located in this download. The Poser horse will load with some altered proportions, and the paperdoll will be parented to the horse's abdomen. Shiro tells me that if you're using Poser 6, when you open the file, Poser will ask you to locate horse.obj, but you need find horseHIP3.obj instead.