Back in December of last year, Marina Sum and I co-wrote the article Sun and Microsoft Interoperate for Web Authentication, Part 1. In that article we examined how Sun Java System Access Manager's policy agents work with Microsoft Internet Information Server (IIS) to provide single sign-on and authorization in a heterogeneous environment. At the end of the piece, we promised further articles on integration with SharePoint Portal Server 2003 and Outlook Web Access in Microsoft Exchange 2003.
Well, it's been a while, but the planets finally aligned for Robertis Tongbram, Access Manager policy agent engineer, and Marina to create the second article (deep breath): Sun and Microsoft Interoperate for Web Authentication, Part 2 - Sun Java System Access Manager and SharePoint Portal Server 2003. The article works from the basics of authentication and authorization in SharePoint to configuring single sign-on between Access Manager and SharePoint via the policy agent. If you're wrestling with SharePoint, I recommend you go take a look.