No images in the DTE, that's the editor for Bryce's mathmatically derived textures. But there are 2 blend modes in the material editor that allows blending of images and the DTE. If you have an "A" channel setup and cntrl click in the "B" channel you'll get a second component which is blended based on the height of the object. If you then cntrl click on the "C" channel you get the ABC blend mode where A and B channels are blended using the alpha channel info of C - black is pure A and white is pure B anything else is a blend based on the grayscale.