I'm running into a problem allowing local Windows user be able to
read-write to directory in a NW 6.0 box.

Normally, it works if you grant the Workstation object trustee rights
to the folder if the process is using the Local System account.
However, the Windows process requires the credentials of a local
windows user (instead the local system account). I think this is what
is keeping the Windows process from being able to read-write to the NW

The NW/Edir and the Local Windows account credentials are synchronized
(userid/passwords are the same). Is there a way to grant rights on the
NW so that that a Windows process using a local user can write to a
folder in NW?