quickshooter

Hello, Is it possible to do a Shetland Pony mod, that would replace all the horses in Skyrim with Shetland Ponies? They are cute and adorable and it would be cool to ride on ponies in Skyrim. http://pit.dirty.ru/lepro/179/2012/01/02/12854-174312-2cd1471795771a25ecb3d194e016a3aa.jpg I am not familiar with modding, perhaps it is possible to make horse model smaller, fatter and with shorter legs? Thank you!