DOS32A is a more advanced extender and open source replacement to DOS4GW. It can improve both performance and stability of Command & Conquer.
sb /r game.dat
Allows enabling hidden options within the game. Most useful perhaps it the ability to increase the netgame player limit to 6 and allow 1v1 game with AI players. More info here.
-cd[cd contents folder]
width, height = equal to computer resolution
See Rainbow color problems in older games for solutions.