Can you post a picture of what you are trying to achieve?

As an example for the Blender Node, here's a Poser 9 Manual: https://www.smithmicro.com:4333/support/faq-graphics/downloads/manuals/Poser_Pro_2012_Reference_Manual.pdf

Look at page 327.

"...

Blender

The Blender node blends two colors using a value attribute as an alpha mask. It has the following attributes:Input 1: The Input_1 attribute defines the first blend color. Clicking this attribute opens the standard Color Picker.

Input 2: The Input_2 attribute defines the second blend color. Clicking this attribute opens the standard Color Picker.

Blending : The Blending attribute is used to determine the amount of blending. Valid values are from 0 ( Input 1 color only) to 1 ( Input 2 color only) "

The Blender node is used to create an output based on a defined ratio of two values, either a color chosen by the color picker or an input from another node, usually an image file or similar sort of node, that are connected to the input channels, 1 and 2.. This will achieve a "blending" of them according to a certain ratio that is determined by the Blending value.

Most commonly, the Blender node is used to create alpha masks that can be used in other nodes or certain channel values. It can also be used to create effects by creating an alpha mask for a texture and then overlaying another texture on that in order to create things like tattoos, scars, ornaments and the like. Here's a common tutorial for one use of the Blender node: http://www.philc.net/tutorial10.php

That is only one way the Blender node can be used. At its most basic, any two values or inputs that you wish to combine in a definable ratio can be achieved by using the Blender node. You define the ratio that they will be "blended" by choosing the appropriate "Blending" value.