This is something like a aimbot but punkbuster doesn't detects it.
For those who shouldn't know: PunkBuster is a program that detects hacks and cheats on players. rapidshare.com sniper-recoil.cfg.html
Simply save it in your C:\Program Files\Wolfenstein - Enemy Territory\etmain
folder and when you are ingame and want to use it. /exec name.cfg
Depends of the name you gave it.