The download site for VSTO 2005 SE Beta states:

"Documentation for VSTO 2005 SE Beta is installed as a whitepaper along with the software."

Where can I find this whitepaper?

It should be available on the Start menu. Open the "All Programs" menu and the VSTO 2005 SE submenu, and there should be "How to Use VSTO 2005 SE Beta."

Cheers,

Harry Miller
Technical Editor
http://blogs.msdn.com/harrymiller
This posting is provided "AS IS" with no warranties, and confers no rights.

Doh!