This is a new game in development, by some talanted Generals modders. It is not a mod for Generals, rather, it uses the SAGE engine to create it's own world. When it is finished, nothing special will need to be installed to play.
The game focuses on continuing the story of the original Command & Conquer series of games (Tiberian Storyline).
Vist
Command & Conquer: Crimson Dawn for more info, and to register in the forums!
BTW, I am the PR guy for the mod.