Image Captions v1.0 is now available for $25 which includes free upgrades to v2.0 which we will release soon after X-Cart v4.1 goes stable. For questions, purchasing and to see live stores running this mod PM.
Edit Captions in admin panel:
http://www.winfieldwoodworks.com/images/mods/xcimagecaptionsadmin.gif
Captions appear under products images:
http://www.winfieldwoodworks.com/images/mods/xcimagecaptions.gif