Bodger/Icarus - Success!, (of sorts, anyway). Unable to transfer from Outlook 2000 to Outlook Express, my Contacts folder contains only names and 'phone numbers in it, all the Email addresses were in the address book and that was not an Outlook 2000 option. However, running 'underneath' Outlook 2000 was the copy of Outlook Express that comes with IE5 etc and that had faithfully copied all the information I had put into the OL2000 Address Book into it's own, (only addresses, no messages etc.), and that Import/Export was no problem as a .CSV file. Thanks for all your ideas.