Leslie
1) The original request is very specific " Journal Entry into the system" and does not talk about Payable module, hence my response was related to GL Module.
2) The original request is also specific, on getting the approver info and not the posted info - unfortunately it is not stored in GP 9 - (GP2013 does)
3) Having said that - I like your thoughts on setting up activity tracking for batch can be used to track the approval info.
Cheers!
Sanjay