A handy new feature in PowerPoint 2007 lets you customize headers and body fonts together to create your own theme font. The next time you use a theme font (click Fonts in the Theme group on the Design tab, not on the Home tab), you can select the one you have created and apply it to your entire presentation with a single click. Here’s how to create a theme font:
Click Fonts in the Themes group on the Design tab.
Click Create New Theme Fonts.
Select a heading font.
Select a body font.
Name the combination.