Convert ABBU (Apple Addressbook File) to CSV with iWork Numbers.
Also you could try the tool:
AB2CSV http://antoniolore.net/ab2csv.php $1
Also known as Address Book to CSV Exporter, this Mac OS X utility allows the user to export his own Address Book in a CSV or VCF file.
Will give both a go and post the result.
Note: if you will be importing the contacts into a FileMaker Starter solution make sure to enable auto-enter options during the import so that each newly imported contact get's the needed ID number. Most other FileMaker Contact DB's will likely need the same option selected for the same reason.
AddressBook is sorta screwed up - neither Apple or Microsoft do very well with email and address applications.
I use Thunderbird on both platforms.
Syncing address book
OK thats good to know, I'll have a look at Thunderbird for future ref. Apple are a little isolated from mainstream in some areas like Address book.
PS Antonio's little APP worked first go which at 69p was worth it, Nice one Antonio.