Plumtree 5 portlet integration

List,

I'm currently working on a WO app to be deployed as a portlet through  
Plumtree 5. We've had experience with the process on previous  
versions of Plumtree, but not since their move to Java. The  
application will be running on a different server than the portal,  
and will need to receive user information (specifically the user ID)  
and the portal header to ensure the portlet runs from within the  
portal at all times, and not in a new window (I've seen documentation  
online instructing the portal admin to simply set a checkbox in the  
web service settings, but our version of plumtree doesn't have this  
option).

We've encountered a lot of problems with this for some reason, and  
the only real info we've come across so far comes from accessing the  
HttpServletRequest, using the Wicket packages. We've been trying to  
use the WOAdaptor to get at the request and response info, but  
haven't been able to make that work.

Originally we imagined setting user info through direct actions from  
the portal to the wo app, but have so far been totally unsuccessful  
with this approach. I'm hoping someone out there has had experience  
integrating web objects apps with Plumtree 5 or greater, and may be  
able to at least point us in the right direction. Thanks for the help,

-Ben