ji1000,
One can visit the Autodesk Algor Simulation Express download page and verify its abilities:
http://usa.autodesk.com/adsk/servlet/pc/index?siteID=123112&id=13774182
This page states that single part models can be imported from Inventor and most other CAD packages. Your assembly model can easily be imported into the regular Autodesk Algor Simulation 2010 software package.
Pat Tessaro, P.E.
Autodesk Inc.
Pat Tessaro, P.E.
Premium Support Specialist – Simulation
Autodesk, Inc.
6425 Living Place
Suite 100
Pittsburgh, PA 15206