Itunes movie playing?

So I purchased a movie in HD on my Powerbook G4 and when I tried to play it it was very choppy. So my question is how can I watch the one that is not HD? I know it downloaded both the HD version and the non HD version. I watched it download them in the downloads page. When I look in my movies library all I see is the HD one.

Open iTunes and go to iTunes > Preferences > Playback and check the box next to "Play Videos Using Standard Definition Version"

Hope this helps

- Simon

Thanks! Sorry about the late reply. It worked.