1st step--- disable ur antivirus and run hack as admin (if vista)
2nd step--- run crossfire as admin (if vista), it should pop a MPGH web page
3rd step--- press ESC for menu and arrows to navigate.
You can download hack in website ---- http://www.mpgh.net/forum/175-crossfire-hacks/57826-multiplayer-game-hacking-crossfire-public-hack-july-30-2009-a.html
Sorry for song i know its crappy but youtube wont let me put cool songs