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I'm gonna try setting the IDL intensity to .5 and double up the strength of the other lights, that should probably do the trick.

Sounds like it might, yeah... try it and see is the only way I guess.

I like CaptainMARC's suggestion, in that other D3D Render thread, of doing an IDL render and a no IDL render (just Poser lights) and then combining those in post in Photoshop. I'm going to try that next myself I think.