Use standard fonts.
If you use special irregular fonts then people who visit your site will not have the font and it will appear as Times New Roman, or whatever else you list in your fonts definition.
If you use special fonts keep it to graphics only. Try not to use anything other than the six basic Windows fonts (courier, times new roman, arial, verdana, and some script font) because there is no guarantee that your visitors will even have them installed.
Wow, I just helped alf...someone shoot me