Locking Down Outlook

I am trying to prevent users from making changes to their email interface.
Specifically fonts and stationary. I have gone the GPO route adding the
administrative templates and found some options but I want to prevent them
entirely from making changes. I did find a little program that more than
likely most of you have heard of before "regmon.exe" found at
www.sysinternals.com. This utlity allowed me to monitor my registry to see
what keys are modified when I changed my font and added stationary to my
emails. I found the keys but I need to come up with a script to modify
permissions on those keys without deny complete access to them. I am no
script guru and this is where it gets grey for me...If anyone knows of an
easier method of doing what I need done it would be greatly appreciated.