Wep hack isn't working for me!

Could some one please post a tutorial/tell me how to make it work.

Hey dude.
Try doing this, Download the PerX attachment on this post, extract it.
In 'What to inject' type crossfire.exe
Hit the browse button and look for the gun hack file.
Press okay
Open crossfire, and it should work fine
Remember. numpad buttons are gun hacks,
f3 and right click is for better power...
f4 is for no spread and no recoil
f5 is invisible hack
f9 upwards is speedhack

i also got problem it says it injects fine but hotkeys dont work