This mod just disables the intro movies (Lucas Arts + Petroglyph Logo) in the full version of EAW.
To install the mod extract the content of the archive to your EAW GameData\Data folder, thats it. No original files will be overwritten. It just creates a folder called XML and in there you will find a file called "Movies.xml" and another one called "Movies.xml Original". If you want to uninstall this mod just delete the two files.
To extract the archive you need the 7-Zip* freeware packer
or a newer WinRAR version
that supports the 7Zip format.
On the page opening scroll down a little and click on the "Free" button.
May the force be with you
*7Zip archives are generally smaller than the ones created from WinZip or WinRar, and it supports all important package formats, and last but not least it is free software distributed under the GNU LGPL.