CWRW has some gorgeous textures for the Millenium Horse.

http://www.renderosity.com/mod/bcs/cwrw-the-elegant-equine-classic-texmap-pack/67993

Her mane and tail pack is beautiful too if you don't mind doing post work in a graphics program.  She has a tutorial to go along with it to make it easy.

http://www.renderosity.com/mod/bcs/cwrw-the-elegant-equine-mane-n-tail-pack-1/66311

And there is a pose pack in her store.  Just a small fortune to purchase all these at once.