Making a video with windows movie maker?

So I'm trying to make a video with windows movie maker.

I need to use an Internet cafe because my laptop is broken, in London UK.

I tried e-mailing a number of clips to myself from my Iphone, this sent them in a file format that wasn't compatible with windows movie maker.

I converted them in two ways;

I used the website zamzar.com to upload video's from my Iphone and convert them to Avi, I then used the download app on my Iphone to download the converted file from zamzar.com. These were then able to upload straight to windows movie maker but they played at a slower frame rate and with a more pixelated screen.

The second way was to download converter lite at the Internet cafe and use that to convert the files to Avi where they could then be imported to windows movie maker. When I tried to import the converted files I received an error message saying I did not have the required codecs to do this. This confused me as I had just imported other Avi files to windows movie maker on the same computer.

My next attempt will be to connect the Iphone to the computer and import via Itunes. What is the typical file format for a video recorded on the IPhone 4S when uploaded to a PC and imported via ITunes. I also have videos on my Iphone downloaded from YouTube in an MP4 format. Is this compatible with windows movie maker or windows live maker?

Any advice is greatly appreciated and certainly worth 10 points.

The best video format for windows movie maker is wmv and mpeg, so you'd better convert your videos to wmv or mpeg format on your computer, that's easy, you just need to use a video converter software to help you, like rz video converter, etc.