Enhanced icon view not working???

So I'm Snow Leopard on my 17" Macbook Pro, and have been for about a week, and the enhanced icon view works just fine on that . (Being able to g othrough pages of a document, or being able to view a video file within the thumbnail).

I just installed Snow Leopard on my 13" Macbook (its about a year and a half old), and this feature is not present. Is this a hardware issue? I'm just wondering if the machine needs ot be running a certain video card, or if I have to turn this feature on.