Hi simontemplar,
there's nothing special to do. P3dO is an explorer, as a starter use it like the Explorer.
In order to open a file from a Pbooost bank into Poser simply double-click it in P3dO (there's nothing to set in Poser - no Prpc Python listener in Poser- ).

Unfortunately P3dO will not rename Banks on the fly and thus you won't be able see this stuff in Poser like you did with PBooost. So if you have Poser 4 you have a problem.
I have already discussed this with a former PBooost user about this. He told me the above was enough for his needs but I can add Banks support to P3dO. 
Please contact me at sales_at_senosoft_dot_com if you want to discuss about this.

btw P3dO 2.2.5 is coming - very- soon ;)

Yarp
www.senosoft.com

Yarp - author of P3DO Organizer for Poser