Poser 6 lets you switch back and forth between the P4 and P5 texture systems. :-)

For P5, use the Diffuse_Color node to add a custom texture or set the color of an object.

If it doesn't look right, post your render and a screen shot of your Material Room settings. People here will be able to tell you what's wrong.

The P5 Material Room does take some getting used to, but it's so much more powerful than the P4 system that once you get used to it, I think you'll like it.

The image is a screen shot of the P5 settings for Don. This is what it usually looks like for a simple texture (no fancy stuff like skin shaders or specularity maps).

If you're asking how to get the color texture box when there isn't one, just click on the "thumb tack" next to the diffuse_color node, and drag out. You'll get a "wire." When you release the mouse button, a menu will appear.