How do I create a reflection effect on a texture, if I am using marble as my ground how do I give the marble texture a reflection?

Poser 4 or Poser 5?

In Poser 5, add a Reflect node to the material's Alt_Diffuse channel, and enable raytracing in your render options.

In Poser 4, you'll probably need to rely on postwork if you want to create a realistic reflection effect.

http://www.renderosity.com/messages.ez?Form.ShowMessage=1149490

Attached Link: http://www.renderosity.com/viewed.ez?galleryid=332856&Start=1&Artist=SamTherapy&ByArtist=Yes

You can do it in P4 without postwork, but it's tricky. You have to do pre-work, by rendering from an exact opposite POV, mapping it onto your surface, then doing your final render. I used a combintation of pre and post work in the image on the end of the link above. Oh yeah, there's nekkid wimmin in the pic, so watch out. :)