Need a Batch File-renaming Utility

I have a massive number of files within a massive number of folders (several 100,000 files; 5000 folders & subfolders). I need to re-name all of the files. Simply giving them consecutive numbers or a combination of letters and numbers (e.g., first file called "ER000001," the second called "ER000002," and so on) will be sufficient for my purposes.

I've found utilities that do re-naming within a single folder, but none that go through a tree structure.

I need this for my business, so there's no problem paying more than I would for something just for my home computer.

Can anyone suggest a program that does this?

Thanks.

Hello,

Here are a few programs which might meet your needs:

123Renamer's - File and Tag Renamer
1-4a Software's - 1-4a Rename
Automator World's Batch Rename (for Mac OS X)
Chosen Software's - Batch File Rename
Denis Kozlov - ReNamer
Jim Willsher's - Bulk Rename Utility
JoeJoeSoft's - Rename Master
Lupus Freeware's - Lupus Rename
SoftTech InterCorp's - BatchRename.EXE
Sudhir Mangla's - Bulk Rename Utility
Thunar File Manager - Bulk Renamer (Linux)

Unless otherwise noted, programs are for Microsoft Windows. Perhaps one of them will work for you.

Regards,

Aryeh Goretsky