How to batch rename files. Try BatchRenameFiles.org

http://BatchRenameFiles.org
BatchRenameFiles Tool is perfect solution for batch renaming files.
BatchRenameFiles Tool features: Rename multiple files and folders, Remove, edit text in the file names, Perform text substitution, Sort the file details by any column, Group configurations into "favorites", Directory recursion - process sub-directories too!
Regular Expressions support, Change the case of file names, Remove characters or words, Remove digits or symbols, Append or prepend text to file names, Append dates in many formats, Append the parent folder's name, Auto-number files with flexible rules, Automatically preview the new names, Rename files from an input text-file list, Create an "Undo" batch file, Log activity to a log file, Change file and folder, date/timestamps (created, modified, accessed), Change file/folder attributes (hidden, read-only, archived)

http://BatchRenameFiles.org