How do I change the font of my dialouge?

I can bet this has been asked like a googollian times, (made up word)
but I can't seem to find anything on this.
It's a simple question. I need an answer fast. XD

Code: [Select]

#==============================================================================
# Script that changes the default font settings.
#==============================================================================

Font.default_size = 20            # Default - 20
Font.default_name = ["Font name here"]   # Font names are used in order. If the first is not available, the second will be used, etc..
Font.default_bold = false       # Default - FALSE
Font.default_italic = false        # Default - FALSE
Font.default_shadow = true         # Default - TRUE

Paste that above main in a new script. That's it.