From the NGW List :
Just an FYI. In GroupWise 8, there is a registry setting that turns off the Document folder in the Windows GroupWise client.
Tnx to Kenneth Etter for posting this in the NGW List!
Disclaimer: As with everything else at Cool Solutions, this content is definitely not supported by Novell (so don't even think of calling Support if you try something and it blows up).
It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test, test, test before you do anything drastic with it.