Windows Free Media Editor. Its Called Windows Movie Maker
You must use IE to download this product as well, Open source browsers will not allow you to access the site I believe. Windows MovieMaker 2 is a capable little editor and ships free with virtually all new XP computers these days, with upgrades available on the Microsoft Website and other addons available as part of the Plus! package.
http://www.microsoft.com/windowsxp/using/moviemaker/default.mspx or
http://v4.windowsupdate.microsoft.com/en/default.asp

Avedit
It is a great tool to work with .AVI files. AVIedit allows you to join and split avi files, extract frames and do whatever you want... You can capture video by number of ways, including one-frame-per-minute (web camera) option, workaround annoying 2 Gb file size limit, send your videos to printer, heavy compress it and post to your webpage. You can change frame rate, duration, frame size, color depth of your videos and other properties, even without recompression and without loss of video quality. AVIedit allows you to convert avi clips to bmp and bmp to avi, animated GIFs etc.Regardless of small executable size, this avi editor offers you unlimited power of digital video processing. Some high-tech tricks included into AVIedit allows you to perform with ease and fun the many interesting things, like video warping, color restore, noise reduction and so on.
http://www.am-soft.ru/aviedit.html

Wax
Wax is a high performance and flexible free video editing software program. It started out as a college project, and has since grown. Wax is good for both home users and professionals. It can be used as a stand-alone application, or as a plug-in to other video editors. The software also features unlimited video and audio tracks with top-down compositing.
http://www.debugmode.com/wax/


JahShaka
An open source video editing software that is currently in Alpha stage but has features found only in expensive video editing software suites.
Works on Mac, Linux and Windows. The interface might take some time for you to get started otherwise the software is definitely the most powerful one out there. And the price is just right. $0. Also does 3D effects which you won't find in other free video editors.
http://www.jahshaka.org/