I have a half-baked solution - I created a dummy service with a KPI that always returns 1 (and color green = normal). This service has a drill-down to where I want to go. I then created an image of a house with the same green background, and shrunk it and placed it over the "1" in the service's KPI that I dragged on the screen.
The user has to click on the peripheries of the control, but it does perform the trick. Do I like it? Not really, but it does allow navigation - once the user is trained.
