http://www.renderosity.com/messages.ez?ForumID=12356&Form.ShowMessage=2470224
and
http://www.xfx3d.net/headers.shtml
This guy has posted up the methodology for rsr conversion so I think your converter should be a walk in the park now; by the way I have QT alternative (open source) installed and it seems to be OK.
Well, i used that method in the beginning, but it'll not convert as many RSRs as the correct handling of the RSR info will allow.
But i'll probably improve the RSR converter at some time.