Les,
the fileserver belongs to a NT4 Domain, but OS on the fileserver is W2K and yes...with NT you are only able to map drives to a Share, not to subfolders. But thats not the thing, as i've written the script runs perfectly when i'am logged on and start it manually.
It must be a permission problem between the AD Domain and my NT4 Domain or the share on the fileserver. Strange.

LittleNick