Casio EX-S500 video help

I am in the US Navy and I am stationed in Japan, so I bought myself one of these. I love the camera and it takes great pictures but, when I take video it wont play right on my computer. The video plays fine on the camera but when I put the video on my computer the sound plays fine but the video goes slowly frame for frame. A friend of mine told me I just needed to get an mpeg-4 video codec. I downloaded a codec pack for windows media player but it still wont play right

try getting divx and xvid codecs, they pretty much cover the whole range

I recommend you use a video player called VLC. It's free, open source, etc. and very fast:

http://www.videolan.org/