Is there a data import function in Directory?

I'd like to bulk import some listings from a previous version of the site. Is there a function to do this? (It looks as though I could get Custompress to do this). Alternatively can you point me at the right tables in the database? I do data mgmt and data migrations for a living so I should be able to sort out the keys etc.

(PS found it in wp_posts - still working out where the custom fields show up - thanks)