...but I needed to add another font elsewhere in the program...
Sounds like Farflame's referring to a program he's making, so that has nothing to do with the IDE fonts listed in the editor configuration file, puki.
I thought Arial was the default font.
I've always seen a font that matched exactly with the "Blitz" font when using a Text command before any SetFont. However, "Arial" is the default font used when an invalid font name is given.