Q:
How can I get a copy of the Help files and how can I set them to be accessed locally, instead of over the Internet?
A:
You can download the online Help files.
The "DocumentationURL" default points at where the documentation is stored (by default, "http://www.omnigroup.com/Software/OmniWeb/2.0/Docs/"). The simplest way to change this is
dwrite OmniWeb DocumentationURL new-url An example of a local url for the Help files: file:/LocalLibrary/OmniComponents/Docs/
Since you usually want to do this for all users on the network, a sysadmin should probably change it in NetInfo (as described in "Advanced Topics for System Administrators", in the documentation).