This policy setting controls whether users can save documents in formats that require the use of external Word converters that are available in the 2007 Office release.
If you enable this policy setting, Word 2007 users cannot save any files in formats that require the use of a converter.
If you disable or do not configure this policy setting, Word 2007 allows users to save a file in any format for which an appropriate converter is installed.
Note - See Plan block file format settings in the 2007 Office system (http://r.office.microsoft.com/r/rlidGroupPolicyBlockFileForm2?clid=en-us) in the 2007 Office Resource Kit for more information about using Group Policy to manage and enforce file format requirements. Also, see the "File Block Technology" section in Chapter 4 of the 2007 Microsoft Office Security Guide for information about the Microsoft Office Isolated Conversion Environment (MOICE), which provides another method.