Greetings. I'm using OS 10.4.11. When I email PDFs, they are automatically converted to JPGs unless I create an "archive" of them, in which case lots of people can't open them, including Mac and PC users. As a sometime graphic artist, this is a real concern. Any suggestions? Any ideas why this happens? On my old iMac using OS 9, I never had this problem. Appreciate the help.