Fonts display differently

[aewhale]

Can someone please tell me why the fonts on a given website display differently for Firefox and Internet Explorer?

I am looking at http://www.SpamZapper. us/contact or even http://www.spamzapper. us/home

Why do the sites look so significantly different as for the fonts?

What can I do to make them look more similar?

[drhowarddrfine]

To make sure all browsers display the same, you must start with valid markup. Validate your html and css for those lists of errors.