Following my TechEd session in Auckland, and in anticipation of my TechEd session in Sydney. All via Paul Stubbs - in particular his DEV303 post from TechEd Boston:

PSS VSTO 2005 Client Troubleshooter

Download this brand new tool to make it simple to diagnose and remediate issues arising from missing or misconfigured prequisites on VSTO 2005 client machines. Gives a great report on the state of the machine and its components:

PSS VSTO 2005 Client Troubleshooter Results

VSTO Application Manifest Editor Sample

Sample application (with full source code) that allows you to inspect and update the application manifest file embedded in VSTO documents.

Manifest Generation and Editing Tool

Not strictly a VSTO-related app (designed for ClickOnce manifests), but can be used with VSTO deployment manifests. Drag a VSTO deployment manifest into the MAGEUI window and inspect and update the manifest. Ships with the .NET Framework SDK. Details in MSDN.

White Papers and Documentation

White Papers

Deploying Visual Studio 2005 Tools for Office Solutions Using Windows Installer (Part 1 of 2)

http://msdn.microsoft.com/office/default.aspx?pull=/library/en-us/odc_vsto2005_ta/html/OfficeVSTOWindowsInstallerOverview.asp

Deploying Visual Studio 2005 Tools for Office Solutions Using Windows Installer: Walkthroughs (Part 2 of 2)

http://msdn.microsoft.com/office/default.aspx?pull=/library/en-us/odc_vsto2005_ta/html/OfficeVSTOWindowsInstallerWalkthrough.asp

Documentation

VSTO Security MSDN documentation

http://msdn2.microsoft.com/en-us/k64zb6we(VS.80).aspx

VSTO Deployment MSDN documentation

http://msdn2.microsoft.com/en-us/hesc2788(VS.80).aspx

Security and Deployment walkthroughs

http://msdn2.microsoft.com/en-us/library/ms404813.aspx

Visual Studio 2005 Bootstrapper

http://msdn.microsoft.com/msdnmag/issues/04/10/Bootstrapper/

VSTO Outlook add-in architecture

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odc_vsto2005_ta/html/Office_VSTOOutlookAdd-inArchitecture.asp