Need Firefox Help

[gingererer]

I enjoy using Firefox as a web browser, but on my home computer it is displaying most (but not all) text in a handwriting font I have installed. I'd like to see web pages in a readable font without just telling Firefox to ignore the fonts the pages want to use. Help?

Note, the font displayed has absolutely no resemblance to any default font listed in Firefox's font dialog box. And this only happens in Firefox, not IE or any other App.