I have a satellite image raster file of an area and a DEM of the same area. I can Extract Values to Points by using this DEM as it contains the 'z' value i.e the elevation information in meter. The image raster file is a color image which is georeferenced and has no 'z' values. I'm trying to add the 'z' value of the DEM to this image raster file using ArcGIS 10. I have tried this process: Adding the 3 Bands of the image Band 1, Band 2, Band 3 along with the DEM file to Composite Bands tools and to create a new composite raster. But I failed to find whether the 'z' value of the DEM is added to the newly created image raster after Composite Bands tools operation. My objective is to make this image raster file associated with the elevation value of the DEM. Is there any error in this process?