CodeHighlighterPlugin : Changing the Default Font Size

I have been looking for good solutions to be able to display actionscript in wordpress. The default tags are fairly useful, but they don't style the code which makes it harder to read. One of the plugins I have grown fond of is the CodeHighlighterPlugin.

The only problem I had off the bat, and others have had as well, is that the font size came in way to small by default. After doing some searching I found out all you have to do is:
1. Open up the codehighlighter.php file
2. go down to the line : return $geshi->parse_code();
3. Right above that line add something like: $geshi->set_overall_style('font-size: 12px;', true);

Hope that helps.