Problem with a Font

Hi guys...I know...it's not directly 'bout an icon, but I need this font for an icon...

I have Arial Unicode MS. It's in my installed fontlist. But I can't use it. When I select it in Word, it automatically jumps back to the previous selected font. And Arial Unicode MS doesn't even show up in my Photoshop (CS).

Now...anyone got an idea wtf wrong is with my Arial Unicode MS Font? All other Arial Fonts work perfectly...but this one doesn't want the way he should...help me please. *tear*