Address books in the old WebMail (InterChange) cannot be converted or imported into WebMail 2.0 (Sun Java System Messenger Express) as the structure of them are completely different. You have to re-create your address book in WebMail 2.0 manually. Nevertheless, you can use Windows' copy (press Ctrl-c of keyboard) & paste (press Ctrl-v) function to copy each entry (one by one) of address books from the old WebMail to the new one.