Okay, so I wrote a post a couple of weeks ago and exposed two of the menu guids for Build. Since then I have been asked for others, so here they all are...

Menu Guid (we use the same guid for all build menus):  

• {34586048-8400-472e-BBBF-3AE30AF8046E}

Menu Ids (in hex): 

• int menuTEBuilds = 0x100;
  • This menu is for the Team Explorer "Builds" Node.
• int menuTEDefinition = 0x102;
  • This menu is for the Team Explorer Build Definition Nodes (under the Builds Node).
• int menuTEAllDefinitions = 0x103;
  • This menu is for the Team Explorer "All Build Definitions" Node.
• int menuBuildExplorer = 0x105;
  • This menu is for the Build Explorer. It shows up when you right click on a completed build.
• int menuQueueExplorer = 0x108;
  • This menu is for the Build Explorer. It shows up when you right click on queued builds (or what we like to call Build Requests).

Hopefully, this is enough to get you started!