I honestly don't know if there's anything that makes DS shaders correctly (and seriously doubt it).  Heck, I don't know any programs that makes Poser materials correctly.  I don't mean to open a can of worms at all lol, I'm just saying it's not wise to use Shader Spider as a DS shader maker.  They make clothes and characters very odd & shiny looking  Since the content creator used them, I doubt they even know how to open DS, so therefore, they won't know how to look at their products in DS correctly.  You have to load some decent lightsets to see what they actually look like in a render.  If you don't load any lights, it takes all shine away, but when you do load them, be prepared to wear some sunglasses lol.  I've even commented that they look like Christmas tree lights before LOL.

I think the best choice is to have an experienced DS user do the DS shaders.  There are plenty around that are willing to do that for you, I do them already for a few vendors and they're very happy with the results (showing them the matching renders against DS & Poser with a matching lightset).

I didn't know Poser, and wasn't about to go blindfolded making Poser nodes for Tindra Thompson, so I asked around for an experienced Poser user, which gypsyangel answered.  She did a wonderful job too!!

...wolfie