No need to apologize, I only mentioned that because I wasn't sure if I was answering the right question. :-) Here's a screen shot of the P4/PP materials editor. As you can see it's much more simple than the P5 materials room. I think this might give an idea of how it works. Reflection is affected by the slider bar, whether or not you check "multiply through lights," the color used for "Reflective Color" at the top of the editor, etc. P4 doesn't allow for true reflection, you have to use maps. Some people use "blur" maps, others use photographs meant to indicate surrounding environment. The values shown in this image, for an item of clothing by BVH, are different from how I usually do it, but there are many ways. I'm sorry if I'm not addressing what you're really asking, but maybe this will help a little.