To install put all files in this archive to your Red Alert 3\Beta\Core\1.4 folder.
Back up config.txt before doing so.

If you have the 1.3 unlocker installed, restore the original config.txt in the \Core\1.3 folder, and delete ra3unlocker3.big from that folder as well (or you may simply move it from the \Core\1.3 folder to the \Core\1.4 folder. 