AppleTV2 doesn't show photos from my computer

When I go to the photos section of my computer in the apple tv, it tells me to go the itunes "Advanced" tab and select which photos to share. I have iTunes 10.0.1 and there is no such option under "Advanced". The word photo doesn't even appear anywhere in or near the Advanced tab. I declare this pretty lame, since it's the main reason I bought the thing.