Tools/Options/Fonts
In the original QS you had no choice of fonts or font colors. I've done better for you this time and I'm sure it will make a difference in your use of the program. Now, you can use fonts that best suit yourself. For defaults, instead of the 8pt font used previously, I've upped this to 10pts as our monitors are much larger these days and 8pt can be rather small. When designing dialogs, I've tried to keep in mind that some users may prefer or require larger fonts so I've tried to leave space for fonts as large as 12pts and possibly more.
Font Options
Dialog Font
The dialog font is all text used to label data fields. This includes all text NOT in data input areas of the dialogs.
Window Font
The window font is used within all data fields and list views of the various dialogs.
Editor Font
Obviously the QS message editor uses the editor font. In addition, when I display a text document, such as the various remailer pages in the QS Stats Manager, I also use the editor font.