Unfortunately, the Business Card Pak seems to be a standalone installer with an "installer.data" file that appears to contain all the data. I am not able to extract anything from that. Do you know whether this installs folders in the Documents\Laughingbird Documents\Logo Elements and Documents\Laughingbird Documents\Logo Libraries folders or does it do it completely differently?
If it installs into these two folders to integrate with Logo Creator, would it be possible for you to make the appropriate files available for the Windows users?