I think there's a forum post about making meshes... Yep! Here it is:
http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=11025.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=11025.0)
(Warning): It's very wordy.