Spell Check Word Template Form Fields Protected Document

This page gives you all the code you need to create the macro. http://word.mvps.org/FAQs/MacrosVBA/SpellcheckProtectDoc.htm

And then since when a document is protected you can't get to the Macros because the protected document disables it, so you need to add a menu button to run it.

That's when this article comes in handy about how to add a menu or toolbar button that runs a Macro. http://www.officearticles.com/misc/methods_to_run_a_macro_in_microsoft_office_applications.htm