I finally got around to publishing my Outlook XP (2002) attachment unblocker applet that does the registry tweaking mentioned in Q290497. No fancy set-up program I'm afraid - it's only a tiny .EXE file so I just dropped it on as a .ZIP file. If you don't know how to get things out of .ZIP files, then I guess it may be dangerous to unblock the attachments in the first place(!).