I am looking for a microsoft program/command that will rename a file to 8.3 format. We left our .ftp site open for someone to download some files and a hacker found it. They proceeded to upload ALOT of files with invalid names so we cannot delete them. We are trying to find a program or command to rename the files so we can remove them from our .ftp site. We had this happen a few years ago and cannot remember how we fixed it.