First, download QuickArial:
http://www.eq2interface.com/download...fo.php?id=3230
This changes all the fonts to Arial, as well as moving them into one file so it's easier to change them all at once.
To customize from there, simply change the
PointSize value to increase/decrease size for a given font set, and change the
FontName value to any Windows system font if you want something besides Arial.