Ed Chen and Marina Sum have written a very interesting new paper on how to import the PS7 inter-portlet communication libraries into Java Studio Creator.  It walks you through how the inter-portlet communication (IPC) library in Portal Server 7 works, how to import the library into Creator, how to tie an IPCEventBean to the default SessionBean,  and then shows how to create a demo portlet that can be deployed with the existing IPC examples in PS7.

Check it out here: Building IPC Portlets for Sun Java System Portal Server 7 With Sun Java Studio Creator 2