Is there a user mailbox size with attachment report or utility?

Our main domain/post office server is supporting about 120 users, but the
PO is using ~150GB. Of this, ~130GB is taken up by attachments. We would
like to run a report or find a utility that will report user mailbox sizes
with the attachments (sizes) they're pointing to (we can't simply limit
the user mailbox sizes without placing our employment in jeapordy). I
have run an analyze/fix on the PO with Collect statistics turned on, but
the output wasn't very readible. I found the GWAttachmentStats utility
which is supposed to reformat the gwcheck.log data into a usable format,
but it fails "3052: Uninitialized variable or undefined function". We're
running GroupWise 6.5.3 on NetWare 5.1 SP 8. Any information is
appreciated.

Thanks,

Derrick