[jboss-user] [JBoss jBPM] - Document upload/management

From the documentation that came with jbpm it talks about JCR and using Jack Rabbit. I was hoping there may be some easier way such as writing a PHP upload program that would come up as your normal upload/browse window on one of the xhtml forms and then the user will be able to upload their documents to be processed. If such a function exists, are there any existing discussions/documentation that you may be able to point me to?