qntc userid in a production batch job

Discussion of QNTC here yesterday made me look at it again.  It worked for
us under v4r3 and didn't under v4r4.  We went to v4r5 a couple of weeks ago
and now it works.  We have a data mart product running on NT that gets text
files from the 400 daily.  I'd like to replace the FTP session initiated on
the NT box with something that is controlled by the job on the 400 that
creates the text files.  I could enable the FTP server on the NT box and run
the FTP session from the 400, but I think it would be more elegant (and
conserve disk space) to do a cpytoimpf directly to the directory on the NT
machine.

Any thoughts on how to handle the userid problem?  The job that interacts
with the NT box needs to have a userid and password that exist on the NT
box, unless there's a way around it.  The job that extracts the data is a
production batch job run nightly.