Rename-It! can rename a lot of files easely but also very quickly. It has integration with Windows Shell: Rename the selected items directly from the Explorer Context menu (right mouse click). The renaming is done by filters: Search & Replace (replace a string by another and support regular expressions or wildcards), Case (make the file name uppercase, lowercase, ...), Crop (only keeps a part of the file name), ID3 Tag (for the MP3 files, read the ID3 informations).
Full Specifications
What's new in version 3.42
General
ReleaseAugust 25, 2008
Date AddedJune 18, 2007
Version3.42
Operating Systems
Operating SystemsWindows, Windows 98, Windows 2000, Windows XP