Changing the file format (which you can do under Tools | Database Utilities)
won't prevent the security warning question.
See http://www.accessmvp.com/JConrad/accessjunkie/macrosecurity.html for
some options.

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Doug Steele, Microsoft Access MVP
http://I.Am/DougSteele
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> I'd like to save the 2000 db file format to a 2003 format to prevent
> having
> to answer the security warning blocked expression etc questions when I
> intially open the file.