The landing page of Lotus Quickr (the one you see if no user is logged in resp. where MyPlaces are displayed) is stored in lotusQuickr/Main.nsf. This is just a stripped down version of a regular place with it’s own style. What you need to do is add in some elements to allow you to create a customized version of the landing page. Here are the instructions:
[Thanks to my colleague Gary Ernst]
How to change the design of the Lotus Quickr (Domino) landing page?