What do you do if you just want a model in blender with a half decent rig to just fuck around with so you can see how rigs work and stuff? Well, generally, you're just shit out of luck. But no more.
-Since blender stores the GUI stuffs in each .blend file, this'll probably come with a fucked up GUI in blender 2.5+. You need to import the "dragon" group into a fresh blender project with non-fucked GUI to avoid that. That group should contain model+armature. -There are naughty bits in there. You might not want to open this one up at work or in public or something. -The rig should be pretty straight forward. Move, resize and rotate stuff around to see what it does. -If you don't know how to use blender, read or watch some tutorials. I won't walk you through this.
You may use this for anything non-profit and crediting me might be a good idea to cover your back. Have fun.