Maybe we do not speak of the same game?
C & C 3 here in Germany is Tiberian Sun from 2000 .
I don't know what the old Tiberian Sun game was, but Tiberian Wars is coming out this month from EA :
http://www.ea.com/commandandconquer/
Here's the details on the demo up on FilePlanet :
http://www.fileplanet.com/174572/170000/fileinfo/Command-&-Conquer-3:-Tiberium-Wars-Demo-%5BFilePlanet-Exclusive%5D
Good news! It's just a shortcut parameter to include non-native resolutions, as posted by Apple here in the forum a couple days ago :
http://www.widescreengamingforum.com/node/7443
It works pretty good! The menus are normal, and the HUD is displayed in proper size as I tested the demo out @ 3840x1024.
I'll have to see if I can grab some screenshots and post them.
Everything plays really well, the only thing is that I have a feeling the widescreen res is cropped, as I had a sense that I was "too close" to the action. Wish tihs game had the zoom capabilities that Supreme Commander does. Now THATS a great game for the surround screens!
cheers