Guys i have used the No Cd patch.. it works... very well.... but before u replace any files .. please make a back up of those files that u replace.
Also when you use the no cd patch... during some of the load scenes there is audio missing(not all the audio) but during game play every thing works great.
The EA hack is also on here... i have not used it!
http://m0007.gamecopyworld.com/games/pc_call_of_duty_5.shtml#Call%20of%20Duty:%20World%20at%20War%20v1.0%20[ENGLISH