Finally after reinstallation of the plugin i see it in Daz Studio
And after manual relocation of the plugin in CS3 folder (because french version maybe)
I can render a scene  from DAzStudio diectly on a new layer in Photoshop CS3

I need more test for it but for now if you don't have CS3 extended you only have access to limited features of the plugin .Is it worth for $$$ for now i am hesitate