Alex,
I don't believe a guide is available, but here's the files that I've had to modify in the past with these flows:
- GLogXML.wsdl - the URI of your OTM instance to post integration to
- PoSendPoToOtm.wsdl - modify the partnerLinks to include the appropriate DB connection strings
I don't have the jar file in front of me (doing this from memory) - so this may be a bit rusty.
--Chris