Also if u run win 7 you also need to put ur etkey in user/appdata/pb/etmain. As these are usually hidden files the easiest way is to go to etkey.org and click on the punkbuster set up tab. This will create a key if required, and add the etkey to ur etmain and appdata/pb/etmain and update your pb files. Then before you connect to a server, run the game, open console and type /pb_cl_enable then connect to server and it all should be good!