Download of winDBus-Friday-13.10.2006.zip (winDBus-Friday-13.10.2006.zip ( external link: SF.net): 1,391,208 octetos) will begin shortly. If not so, click link on the left.
Windows port of the freedesktop.org DBus. The code is now part of the official DBus releases: http://www.freedesktop.org/wiki/Software/dbus#Windowsport. But you could find binaries here.