Having students create video lab reports from cell phones and running into problems

I have been having my students conduct and inquiry lab to get them familiar with "thinking like a scientist." I decided to have them create a video lab report as opposed to a traditional lab report. My thought was that we could easily share their experiments with the world as a video rather than a doc file. I also thought that they could use the technology in their pockets (phones, etc.) to create something meaningful.

Our school has PC lap tops that the students can use so I assumed that they would use WMM to create the finished products. The problem I've been having is that their cameras transmit the video in .mov format which WMM does not read. I tried to download a converter that works when I am logged in as the administrator, but not when the students are logged in. Does anyone have a good converter they suggest or an easier way to use cell phone video?