Videoclips on digital cameras tend to be .mov files which can be played by QuickTime. However, if you want to edit them using Windows Movie Maker, they need to be converted into .avi files first. You can do this by purchasing QuickTime Pro, or for free by using RAD Video Tools. If at first the latter does not work, try different compression types. I use Intel Indeo for my Panasonic Lumix DMC-TZ3 camera clips.
I would really like to do what you can do with EveryTrail (see earlier posts) with OS mapping.
The Ordnance Survey have just announced the launch of OpenSource for developers. This looks like rather hard work unless you are used to Java programming.
Anquet tell me that they are soon to launch something similar to EveryTrail but with OS mapping so I will be interested to see how that pans out. However, there are licensing restrictions with showing OS maps on websites, so I will be getting in touch with OS to see exactly what the situation is. Watch this space.