This script lets you perform texture map batch operations. You populate and rename the filepaths for the diffuse, specular level, normal map and opacity map by a chosen naming convention ( as well as set other common properties ). You define a string to search for in your existing scene map filepaths, and define a string to replace it with. If you have many bitmaps named according to a naming convention, you can quickly populate the appropriate maps accordingly.
Simply run the script from the maxscript menu.
Works with Standard and Multimaterial