Need to find a way to do something. Perhaps a tool or utility. I want
to be able to save all the current registry settings. Then make a
change to a setting in an application such as MS word 2007. Now save
the new registry to a second file. Finally compare the two saved files
to find what settings have been changed.

As an example setting:
MS Word 2007->
Trust Center->
Macro Setting->
Enable/Disable Trust access to the VBA project object model

I appreciate any help on this.