I started this one when working with MB, then thought I'd bring it across.
Essentially, this addition will allow admin users to download a v-card for clients from inside WHMCS (need to be logged in, obviously).
The file can be found here , scroll down to the bottom of the page, look for WHMCS stuff .
I started this one when on vacation, actually, needed a quick way to get all client files into outlook/ipod. This provides a mass generation script as well (read the install ).
Free mod, up for the taking, just another contribution towards making WHMCS great