During the first half of 2004, UNIGIS student Edu Boer wrote a short report about the connection between ArcGIS and Simile (rel. 3.2)
Summarized: Although he is critical about the present level of interoperability, he states that Simile holds a promise for GIS-based space-time modeling.
If you would like to read the report (22 pages in total) send an email to
Frans Rip
Geodesk, CGI, Wageningen UR
http://www.geo-informatie.nl/cgi
GeoDesk - http://www.dow.wur.nl/UK/cgi/gdk/
simile-arcgis-arisflow-spatial_temporal_modelling.pdf
The links above no longer seem to work so I attach the PDF (simile-arcgis-arisflow-spatial_temporal_modelling.pdf)