[peggyr]

I found what I was looking for which was

skin1/skin1.css

I changed the 'font size' from 10px to 14px below, and got the result I wanted -- posting here in case this is useful to anyone else

General styles
*/
BODY,DIV,TH,TD,P,INPUT,SELECT,TEXTAREA,TT {
FONT-FAMILY: Verdana, Arial, Helvetica, Sans-serif;
COLOR: #000000;
FONT-SIZE: 14px;
}