Reg conversion agent in sap PI/XI

Hi All,

1. I am having a requirement whwre we need to conert XML file PDf and sime times PDF to XML. From my collegue i got some information about conversion agent. From where we will get this agent and is this is free version or do we need to take licenced version ofr using it my project.

2. can any body provide me the detailed information about conversion agent and how to Install in our system How to use the conversion agent for converting XML to PDF and vice versa.( Please privide me any screen shots are there)

Regards,

Rama