Windows XP Fax service - where are the Inbox / Sent archive files located?

Hi all -

I'm trying out the fax service that's built into XP and like it OK so far.
One question I have, however, is where the archive files are located that
hold the faxes one sees in the Fax Console. And related to that, are these
individual files or are multiple faxes put into a single database somewhere?

I'm not talking about the "extra" location that one can specify for incoming
faxes to be stored, just the stuff that one sees from the Fax console.

Thanks in advance!

/gary