How to cosume BPEL worklist as a portlet in webcenter application

Hi,
Can someone guide me how to consume a BPEL worklist application as portlet in webcenter application. I have a BPEL process and have deployed it on BPEL Integration server installed on oracle apllication server. But how to proceed from here? The portlet should show all the tasks exactly as it appears in the worklist applction.
Thanks
Anand

Thanks a lot Cappa. Those links were really helpful and I have completed the POC successfully by integrating my existing ADF application with WebCenter by following the steps mentioned in http://www.oracle.com/technetwork/developer-tools/jdev/ccset62-all-100884.html.
Apart from the links you mentioned, Andrejus pointed to one of his blog entry on the same topic. Please find the same at http://andrejusb.blogspot.com/2009/12/producing-jsr-168-portlets-directly.html
Now, the issue is it's very very slow and it's getting timeout most of the time. I'm getting concurrent modification exception also some times. Both the applications are running on the embedded server that comes with JDev. Have you ever come across it?
Regards,
Antony.

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    figurationManager.java:101)
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    <::> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
    alve.java:174)
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    ava:127)
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    ava:117)
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    a:151)
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