First step to integrating OpenOffice into the NetBeans Platform (yes, trying that again) is to get it working outside of the NetBeans PLatform.
I started by downloading NetBeans IDE 6.5, installed the API plugin, then moved the OfficeBean sample from the OpenOffice SDK into the OpenOffice Client project type which I opened in NetBeans IDE 68:

Running it, I see this:

The next step is to open OpenOffice via the OfficeBean into a NetBeans Platform TopComponent. This blog entry will probably be very useful.