When backing up Eudora these are the files... *.mbx = mailboxes *.toc = table of contents filters.pce = filters file descmap.pce = long file names nndbase.txt = your address book rcpdbase.txt = quick recipient list imos.dat = last messages read off server uignore.tlx = keeps track of the words you've added to dictionary Eudora.ini = all you settings (this is important unless you want to re configure your settings) Nickname directory *.fol directory = mailboxes inside folders Sigs directory for signatures Attach directory contains the attachments you've received unless you've moved them. I don't use all those options with Eudora so I don't back them all up. If you use nickname, back up that directory, ect. Hope this is helpful. These are for Eudora 4 but are pretty much same for all. Don The PCSOFT web site always needs good submissions. If you would like to contribute to the website, send any software tech tips or software reviews to: [log in to unmask]