Font is not showing up? HEELP HOMIES!

Hey guys… I just got done making this site:

The problem is, if you get the site opened (after you click on the logo that makes it pop up) there should in the left side be a menu, with menu titles on the buttons. And there is! But not in internet explorer! I really don’t know what the problem is! The menu titles are written with tahoma, which should be standard?

Anyway, I can see the menu text in Opera (dont know about firefox?), but it doesn’t work in IE - unless it works in yours?
What am I doing wrong?