MOSS or IIS as Web Server Security Provider

Is it possible to use Microsoft Sharepoint/IIS as a Web Server Security Provider to implement SSO? The documentation says the following:

“It is only available if you interface to Rhythmyx as a servlet under the Web server or Web application server. If the user has been authenticated by the Web server or Web application server, Rhythmyx grants access. This type of authentication is useful when accessing Rhythmyx through a Web application server, such as BEA WebLogic or IBM Websphere”

This seems to imply that the server has to be a JEE-based server, but given the language above, I am not exactly sure.

Thanks!
Duane