1)You need to download a hack first...go here CrossFire Europe Hacks - MPGH - MultiPlayer Game Hacking & Cheats - Hacks, Cheats, Downloads, Trainers, Games and scroll down until you see some hacks.This hacks must be not detected.
2)Now after you download the hack you must know a think: if it's and .exe it will inject automatic
if it's and .dll you will need an injector(some times you don't need)
3)Now if it's an .dll you need an undetected injector(very importent to be an undetected) go here and find one CrossFire Spammers, Injectors and Multi Tools - MPGH - MultiPlayer Game Hacking & Cheats - Hacks, Cheats, Downloads, Trainers, Games
4)Some hacks are auto one some not(they have hotkeys)and some have menus.In every hack relase(as i know)if you read it you will find what kind of hack is:
if it's an auto on or have hotkeys(it will tell you what they are)or if it's whit menu there is a hotkey(or not) to display the menu.
5)Here i don't know really well but there are lots of posebility...They might have vip hack,or they code the hack and don't relase it,or they change the hack every time when it is detected.
PS:Every time i recommand you to test the hack whit an account (not the main) because the hacks can work for windows xp 32bits for exemple but they don't work for windows 7 64bits ... and you can be banned
PS 2:Sorry for my bad english
Please press thanks button if i help you
if you want i can make you one in romanian xD because here i can't speak romanian it's in the rulles... i will sent you a new one ...