About Call of Duty: World at War

If anyone is having trouble starting a game (game refuses to start after selecting difficulty and so forth). You don't have active profile.
* Make sure the following folder exists:
...XP: C:/Documents and Settings/USERNAME/Local Settings/Application Data/Activision/CoDWaW/players/profiles/
... Vista/7: C:/Users/USERNAME/Local Settings/Application Data/Activision/CoDWaW/players/profiles/
* Add profile folder there, choose whatever name you want (e.g. "Default").
* Add active.txt file there (in profiles/), and add the name of your profile folder in it.
* Start

Note that the Local Settings folder is usually hidden.