AmoK DelayDel can delete even these "undeletable" files.
Some files and folders are blocked for deletion by Windows XP and Windows Vista. If you try to delete these files you get an error message such as "Cannot delete folder: It is being used by another person or program. Close any programs that might be using the file and try again." Especially films (.avi, .mpeg, .mpg) are sometimes difficult to delete but also DLLs and other files such as viruses or spyware.