Many people have asked me for the links to the embeddable viewers and the .NET interfaces for plug-in algorithms.  Instead of my usual response, "go to the feature pack page and scroll until you find them", here are the direct links.  Enjoy!

Data Mining Embeddable Viewers
http://www.microsoft.com/downloads/details.aspx?FamilyID=df0ba5aa-b4bd-4705-aa0a-b477ba72a9cb#dmviewer

Managed Plug-in API
http://www.microsoft.com/downloads/details.aspx?familyid=df0ba5aa-b4bd-4705-aa0a-b477ba72a9cb#dmapi

Also, you may need to download the OLEDB and ADOMD.NET providers as well for client applications

ADOMD.NET
http://www.microsoft.com/downloads/details.aspx?FamilyID=df0ba5aa-b4bd-4705-aa0a-b477ba72a9cb#adomdnet

OLEDB Provider
http://www.microsoft.com/downloads/details.aspx?FamilyID=df0ba5aa-b4bd-4705-aa0a-b477ba72a9cb#asoledb