How to Create Realistic Ice

I recently asked on Facebook what tutorial you wanted to see next, and since 'Realistic Ice' came in at a close second I figured a lot of you were keen to see it. Ice generally renders better with unbiased rendering engines (like LuxRender or Cycles), due to it's heavy reliance on refractions and reflections. But in this tutorial we're going to try to use Blender's rusty 'ol internal render engine (the displacement map) to create a decent result :P

Finished Result

Reference Photo

Further Inspiration

Congrats on making it to the end. Here, have a drink on me :P