Capturing events on newly added folders in an Outlook Addin

I am having trouble setting up items events on new folders that I add
programatically in my Outlook Addin.

I can successfully setup an event sink on existing Outlook folders (to
catch items events) by calling the code below, however this only seems
to work if I call the code from the OnConnection method of the Outlook
Addin Interface. When a new folder is added (by my program, way after
the OnConnection method), I need to be able to catch items events on
it. Is this possible?

Thanks in advance
Simon Bates