I am trying to play videos on my new camera, but I'm having some problems...?

I got a new digital camera, a Casio Exilim 10.1 MP, cuz my old camera broke, which was the same camera, just an older version and only 5 MP. Anyways, I was wondering if there was any way to play videos from the memory card on the old camera on my new camera. When I put in my old card I can see the pictures I took with my old camera, but the video files can't be played. Is there any way to convert the video files or something so that they can play on my new camera?