Comment 4 for bug 433781

A simple workaround is the following:

Make a file <program files>/Bazaar/bzrExplorer.js with:

  var WS_HIDDEN = 0;
  var shell = WScript.CreateObject("WScript.Shell");
  shell.Run("cmd /c bzr.exe explorer", WS_HIDDEN);

Add a shortcut to this .js file to the start menu (optionally with the icon of bzr.exe).

IMHO this might in fact also be a simpler and cheaper solution than including a second executable (either bzrExplorer.exe or bzrw.exe). You add a depencency to the Windows Scripting Host though (but afaik it is pretty ubiquitous).