Apr 07, 2009 10:41 AM|stmarti|LINK
Manually you can do this this way (maybe this helps you how to reference the context menu)
Click any tiny arrow at the end of one of your toolbar\add or remove buttons\customize\toolbars\check "context menus"\a new toolbar appears where you can customize any context menu.
Maybe there is also a "Context Menus" command bar(?) Enumerate Microsoft.VisualStudio.CommandBars.CommandBars to find out.