Attached Link: Fallen Angels, Restless Wraiths

There's a product at 3DC that also might help you with the result you are after. It appears to make both the character and the clothing, etc., transparent. You can view the product at the link I'll attach.

The product's description reads:
"This package allows you to add special effects to your characters so that with a couple of clicks of your mouse you can create shining angels, barely seen ghosts, or just a set of shiny clothes..... All the effects are developed and tested with Poser 4, 5 and 6, so they can be used by everyone. A complete set of textures suitable for the application of effects is supplied for the supported figures, but if you have a texture already in your library that you want to make see through, glowing, or just add a bit of sparkle you can do that too! The MAT poses are structured in stages, so you can load a texture from anywhere in your library and then just skip past the texture load straight to the special effects. Each figure also has a set of six tone settings, so you can add a colour cast to your figure (the settings for the hair, wings and clothes and people all match). The effects change with your lighting and the scenery behind."

Maybe this will help you achieve the look you are after? It looks pretty cool!
Hope this helps!

~arry

I dare you, while there is still time, to have a magnificent obsession. --William Danforth