Sharing a single session among multiple portlets for single application (e.g. wInsight)

Does anyone know the best practices way for sharing a single Session for an application (running on a single Porlet server) among multiple portlets on a page?
For example, the application wInsight uses 3 frames (navigation, search results - tabular, search results - chart) which need to communicate via the application's session scope. It is not just that we do not want for a single user to be running multiple sessions, but they really do share variable parameters this way.
So far I can only think of trying to build a one true portlet and two empty containers on page load. I would use the portlet to establish the session with the Portlet server and then transfer the session information to the other two empty containers to instantiate their respective portlets. I haven't tried this yet, but will do so soon...
Any help and feedback would be greatly appreciated.

Karen,
You can easiliy create several portlets out of a Struts application. For detailed instructions, refer to the Struts section of the Portal Developer's Guide.
Good luck,
Peter

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