I don't know if you guys know the answer, but lets see...

I asked this question/s on the Windows Vista site, because I'm having a bit of a problem.
So this is what I asked:

Hi, I don't know if this question has been asked all ready, if it has, well I couldn't find it. Anyways, I have a digital camera. Its a Pentax Optio E30. When I upload a video into my Windows Vista laptop, I can hear the audio, but I can't see the visual. There's nothing, just a black sceen. But I can hear what's going on. I don't know if its because the format of the video is AVI, but if it is, is there a way I can change it? Maybe into a WMV format, because I know that works. When I use to use my Windows XP and upload videos, it would show the visual and the audio, but not on Windows Vista.
So yeah, can you please help me?