I have a handfule of files on my Mac that canot be altered, deleted, or moved. They can be read, executed, and copied. When copied I can then change the permisions on the new copy but the origonal remains stuck as it is. When I try to change permissions on the problem files i get and (error code 120). When I try to do so in Terminal using the following comand sudo chmod ugo+rwx Undeletable_File.html I get the following error message: chmod: Undeletable_File.html: Operation not permitted My computer is Mac OS X 10.4.7 PowerPC G5 Thank you for any advice.