I second Stefan's idea of using a template instead. Here's how to implement it:
- Create a new blank document and save it as a template (.dotx).
- Open File>Options>Quick Access Toolbar.
- Set the Customize Quick Access Toolbar dropdown to For YourTemplateName (the name of your saved template).
- Add the QAT commands from the left-hand list to the right list. OK out and save.
- Close Word.
- Copy the template to the Word Startup folder. By default, the location is
C:\Users[YourActualUserName]\AppData\Roaming\Microsoft\Word\STARTUP - Open Word to test.