okay, so i looked into this (a little) more... and it looks like swift 3d just exports renders (like 3dsmax or maya, blender, etc...) and this will either take rendered sequenced images like file001.jpg, file002.jpg, file003.jpg, etc... and import them as a sequence...
or just auto export from swift3d as a .swf file...
once you have your flash files inside of flash. You use actionscripts to create the interactivity.
that's what it looks like to me, but i just went through some tutorials, etc on the
Electric Rain - Leading 3D Vector Graphics Software For Adobe Flash SWF - Swift 3D, Swift 3D MAX, Swift 3D LW, Swift 3D Xpress site
anyways, if i'm way off base here, sry... :s