What would the URL be to link to the Google Apps Sites Start Page that allows you add a specific gadget to your page?
For example, if I want to add a widget to a regular iGoogle page, I use this: http://www.google.com/ig/adde?moduleurl=URLTOMYGADGETXMLGOESHERE
However, I need to know what the URL would be for Google Sites Start Page. I have tried all sorts of variations on that URL with the domain of our Google Apps page, as well as just about everything with partnerpages and I can't seem to find it.
Edit: Alternatively, being able to add a section of gadgets to the gadgets directory would be sufficient.