Yep, it works!
However, there is a small catch - it's shareware for the full version. You can download it and try it out for free for 14 days, but it will only sync the first 50 addresses in your address book and keep those up to date (for 14 days). If you want the full kit and kaboodle, which also syncs groups (and I am thinking very seriously of getting it, since I manage an email list of over 150 people) it's $15, paid through Kagi.
Just found another (free) script - which exports the addresses as a tab-delimited file, so that they can be imported into Entourage. It's here:
http://www.gwenhiver.net/applications/Not quite as full-featured, but if it is a one-shot import you're looking for, rather than constant upkeep, it might do the trick. Looks like a tad more work than Paul's script though.
