Veronica shows you NameChanger, which lets you modify filenames in bulk.
iTunes 7.0.1 (#3): Finding media with a question mark (?) in their filenames, problems; more
Office 2004 SP2 Special Report: Problems opening files with long filenames/deep directory locations
Office 2004 Service Pack 2 [SP2] (#4): Numerous Entourage issues; Problems with long filenames; Error reporting back; more
Mac OS X 10.4.2 Special Report: Spotlight cannot find single asterisk filenames
Mac OS X 10.4.x: Fax sender ID not displayed in filename
Odds and Ends: Saving files with a period (".") at filename beginning; Griffin radioSHARK and unusable audio files;
Mac OS X 10.3.7: Long filename truncation: Fixed or not?
Mac OS X 10.3.6 Update (#15): Filename truncation and DNS fixes on the way; USB mic issues
Mac OS X 10.3.6 (#12): Possible fix for filename truncation bug; Installer package appears as a normal folder; more