Run injector as admin, Use Combat Arms Direct. Inject using PerX or Portal. Make sure you have netframework 4 and that C++ redistributable package Kush will say the name for (thanks lol). DO NOT POST ANYTHING THAT SAYS OMG! doesn't work for vista. I will personally not help you since it has been said in THIS. Post and possibly many others.
If it isn't working for Windows 7...
Same as above -.-
If it doesn't work for windows xp...
You need a brain check because its the easiest to hack on xp, Inject using PerX/Portal, make sure you have all that is said above, and if your dc/crash (which shouldn't happen yet -.-) only turn hacks on ingame and not in the lobby.
For all systems : If you experience lag or anything, you need to open task manger and delect BlackCiper.aes or whatever, than if you still experience lag, you need to fix your computer because its being bad. QUOTE. THIS. POST. IF ANYONE ASKS FOR HELP. If it is a different error, don't quote this post, attempt to fix it by helping the person.
Do as i said and it should work =P (Thats if you can't get it to work but you'l see injector, run as admin, and make sure you have netframework 4 and that c++ package.) Nice injectors should be PerX and Portal