Download the Outlook 2007 Zoom add-in
To install the Zoom add-in in Outlook extract OutlookZoomSetup.zip file to a temporary folder. Then in the folder OutlookZoomSetup navigate to the folder app.publish and double click the Setup.exe
In order to keep the setup small the prerequisites for Office 2007 add-ins are not included. If you start the setup it will try to download the Microsoft prerequisites if they are not present on your computer. These prerequisites consist of VSTO Installer 3.0, .NET 3.5 SP1 and Windows Installer 3.1
After installation you will find Zoom added to the menu in Outlook.
Download also the Visual Studio source files of the Outlook Zoom add-in here.