Address Book?

[KCardinalart]

I am setting up a private community for my family to keep in touch since we're all over the country and constantly moving.
Thanks to Vb and some very clever hacks I've got the forums, photo albums, chat, calendars, personal bookmarks and local info (weather, time, news) sections done.

The only thing I'm missing is an address book. Since I have a large family and many of them move a lot, I'd like to have a place where they can store their latest address and phone numbers, so I actually know how to reach them.
I want to make a "standard" address book with searchable fields and such.

Is there a hack or stand alone script that will integrate with Vb for this?

btw: Sorry if there's already something like this out there that I don't know about. I usually create art sites and this is my first foray into a community site.

Thanks everyone for making my first try at this so much fun!