Demo version avaliable here:
Tested with Maya2009, Softimage 7.01, Softimage 7.5 and Softimage 2010.
Download Asymmetric Bridge demo for Microsoft Windows
Download new demo version with support of Autodesk Maya 2011 and Autodesk Softimage 2011
This is 64bit version for Windows XP.
See it in action: http://www.youtube.com/view_play_list?p=1D283E588777691B