CR2's are just plain text files (on a PC) so any text editor will work, but specialized editors make it so much easier. I use John Stallings freeware editor: http://www.egroups.com/files/PoserTECH/Cr2Editor151.zip http://www.egroups.com/files/PoserTECH/Cr2editor.PDF There's also a one for purchase that has a few more features: http://users.neca.com/dwilmes/cr2edit.html -JH.