The filesystem path to the search_templates directory, which is where your search templates should be located. This setting defaults to ./search_templates, which means that the search_templates directory is in the same directory as the mt.cgi file; you probably don't need to change this setting, unless you have moved your search_templates directory.
Default value: ./search_templates/
Note: From version 5.2 and up, users have the ability to specify multiple directories for template storage. If multiple directories are specified, Movable Type will load template files from all directories in order of mt-config.cgi's sequence.
Multiple specification example:
SearchTemplatePath /path/to/directory SearchTemplatePath /path/to/another/directory