Editing Videos

I edit all my YouTube videos with Windows movie Maker, I have Windows Vista. The Movie Maker was already on this computer. If u don't have it. It can be downloaded for free, just search google. I also downloaded more effects. I found a couple websites where u can download more cool effects to the Windows Movie Maker, just search google. I have a kodak easyshare camera, it records videos in .mov format. but I heard WMM doesn't accept the .mov file just mpeg and a few others. but mine accepts them for some reason, it always has. So I don't know why my WMM accepts .mov file and for other people it doesn't on their computer. there's gotta be reason for this, I haven't figured it out yet.