iSeries is unknown to me, but we live in a mixed Linux-Windows environment, where Linux runs on Wintel boxes.
Here we use the following script, to mount a specific Windows directory to a given Linux machine. The trick is to mount it so that Windows thinks you are a Windows user, with your Windows password. Then you can read, write, create, and delete files in the mounted directory, and of course sub-directories.
# mount the Windows S drive under /windows/S
sudo umount /windows/S
sudo mount -t cifs //Your.server.url/YourDirectory /windows/S -o username=YourUSER,workgroup=YourWORKGROUP,file_mode=0777