This will export the address book database to a file. If a "Save As" dialog box does not appear, right click the link instead and choose "Save Target As..."
Eudora Nicknames file
(copy the output to /Eudora/NNdbase.txt)
mySQL Dump File
(backup purposes)
CSV File
Plain text
(with separator) (broken)
XML
Gmail
(Importable contact list)
vCard
(warning: downloads to your computer and installs in your address book with no further prompting!)
A good address book converter (although a little old):
InterGuru's E-Mail Address Converter