COD4 Modern Warfare Keygen, Level 55 Hack- unlock all guns.

[Update: 1-5-09] Due to Underground proactiveness, Chyea has re-done the video tutorial to lay down the hellfire that this hack does work.  All you non-believers, watch the video and cleanse your eyes.  If you cannot accept the fact that this hack work,s then you need to re-evaluate your own method.

“Call of Duty 4 makes you unlock weapons, weapon attachments and mods, camouflage, and challenges. Well there is a way around that because all of the data is stored client-side. To unlock all weapons for Call of Duty 4 multiplayer so that you don’t have to level up follow these easy instructions.

1. Download this mpdata file.
2. Go to Start -> Run-> Type regedit -> Hit Enter.
3. Go to HKEY_LOCAL_MACHINE -> Software -> Activision -> Call of Duty 4
4. Double-click codkey
5. Save the key in notepad
6. Replace the key with: DL2J8PY44Q22GE4888D2
7. Press OK and close regedit.
8. Navigate to your Call of Duty 4 profile folder (typically “C:\Program Files\Activision\Call of Duty 4 – Modern Warfare\players\profiles\your_user_name”)
9. Back-up and then remove all the files in your user name folder.
10. Place the mpdata file you downloaded in your user name folder
11. Open the COD4 MP game and check your rank. You should now be level 55 with all challenges, guns, and every camouflage unlocked!
12. Finally, in the game go to Options -> Multiplayer Options -> Key Code and type your original cd key you have saved in notepad.
13. IMPORTANT: you MUST join a server after the above step, stay in it for a couple of  minutes so that the new cdkey will be encrypted onto your profile.

There you go, you now have everything unlocked. Enjoy.”

Note: if you’re using Windows XP, when choosing to save the mpdata file, make sure you put quotation marks -> “mpdata” as the file name. Otherwise XP will save it as a default txt(I think) format.

Note: if you are using a 64 bit OS, the registry path for the cdkey is as follows: HKEY_LOCAL_MACHINE —> SOFTWARE —> Wow6432Node —> Activision —> Call of Duty 4

Source (Thank you): http://karmarogue.com/2007/11/19/cod4-unlock-all-guns-level-55-crack/

Video tutorial: http://www.youtube.com/watch?v=LSP76WbLJ_Q&fmt=22

Video re-done and uploaded 1-5-09.  Watch it in HD at youtube.

Also, to play COD4 in a window, add this to the shortcut: +r_fullscreen “0”