You can edit a cr2 in a text editor, but always make a backup first. Editing cr2's is not for the novice, but if want to try changing the bump map reference do a text search for the word "bumpMap". Assuming the file you want to reference is in the "Textures" folder or one of its sub-folders use the format: bumpMap ":bump.jpg" Where "bump.jpeg" is the name of your bump map, and is preceded by a colon and enclosed in double quotation marks. It is not necessary to include the full path as long as the file is in "..Runtimetextures" or one of its sub-folders, this holds true for any Poser 4 map files. Some information on the structure of cr2's is available at: http://www.kzin.org/poser/cr2/index.htm