1: Download Valkyrie Injector *2.0* <- Must be! (Run in Windows 2000!!!)
2: Browse the .dlls and use the one provided by longivity.
3: Run Combat Arms (Windows 2000!!!) Inject quickly or use autoinject.
4: Go INGAME! And use NUM (Numpad doesn't work on a laptop sorry!) keys 1-4 or w.e.
5: Own some choobs.
I do not take credit for any part of the hack uploaded by longivity I simply made a tutorial that works FOR ME.
Hope it works for you!
Lastly- It may not work for you. I am running Vista home premium 64bit. It works fine.