收集了一些关于VS 2005 Add-in开发的文章

Explorer - A Visual Studio 2005 add-in which interacts with Windows Explorer
How to debug a Visual Studio .NET 2005 Add-In
Writing a Visual Studio 2005 Add-In
The new command bar types, part 1
Command Bar Types – Part 2 
Displaying custom bitmap for VS add-in command button from satellite DLL