I knew someone was going to ask that!

Beanworks, I simply use PhotoShop to layer two separate screen-shots to create the 'transparent' appearance.

In my opinion, the more and more I use that effect, the more and more I wish there was an option in MoI to apply a transparency attribute to the object or its material.
It's a standard modeling procedure for me to grab objects that obscure my view and then to "Hide" them. The problem is that I often desire to still see the objects by some method for reference.

Michael, I'll consider adding it to the wish list, but a transparent attribute for objects shown the MoI display would prove valuable in applications requiring quick view of technical detail and sub-level illustration. I don't know if it's possible at all using DirectX, but it might be a snazzy feature.