Thanks for your response.
I actually looked into that part yesterday but the catch on this side is that I do not have Administrator access to the Windows Active Directory which is controlled by the office. I do have an account to access the AD, and have been able to implement this on another linux system via modifying the various config files like for /etc/krb5.conf and others.
The problem on the Zentyal system, which is using Ubuntu 12.04, that I am having in this direction is that it does not save my changes to these files when re-booted.
I started looking into the *.mas files that are in the /etc/zentyal and /usr/share/zental/stubs directory so far, but could not find the files for the krb5.conf or krb5.mas.
For example, I need to network domain to be one example.com and the krb5.conf realm to be like campus.example.com, but zentyal seems to like them all the same.
There are other changes as well, but I will just have to look into them more.
Thanks again and have a great day,
Lonnie