Replacing default fonts

[mark98101]

I have MS Office 2008 for Macintosh.



My default fonts are Calibri for the theme heading and Cambria for the theme body. How can I change these fonts to two others that will then be my default fonts?

In other words, when I have a Word document open I want to be able to click on the pull down menu on the formatting bar and see that Myriad Pro is now my default theme heading font and that Book Antigua is now my theme body default font and that Calibri and Cambria have disappeared from those positions and that I don't have to all of this again when I open a new document.

Thanks.