the categories are controlled by a global variable called <%header_font%> (look in the admin panel under templates and then global vars) -- the size comes from that.
forums are the same size as any other regular text on the page. If you want them to be something different in size you would more than likely have to hard code it into the template (category_list.html under the default templates). If you don't mind making all of the default text size smaller then <%body_font%> is the global variable that controls both the forum titles and regular text. It can also be found in the global vars section of the admin panel.
Herpeton
VegPeople.com
forums are the same size as any other regular text on the page. If you want them to be something different in size you would more than likely have to hard code it into the template (category_list.html under the default templates). If you don't mind making all of the default text size smaller then <%body_font%> is the global variable that controls both the forum titles and regular text. It can also be found in the global vars section of the admin panel.
Herpeton
VegPeople.com