Make a new profile or back up your old profile.
Ok, go to your CoD4 installation directory, get into your player folder and open your profile folder, delete all the files.
Don't run CoD4!
Then copy the mpdata into the folder (attached) and apply the registry value (attached) that will change your CD key.
Run CoD4 and play a game or two on servers that don't need CD key verification.
Change your CD key back to what it was before (or leave it as it is if you play on cracked servers anyway).
Enjoy your lvl 55 profile!
If you want to thank this post:
thanks!
Virus scans coming...
EDIT:
Virustotal is lagging, scanned with
Online malware scan
File: codkey.rar
Status: OK
MD5: 5a5dbc0b5f9f4251709508f97b45a2de
Packers detected: -
Bit9 reports: File not found
Scanner results
Scan taken on 24 Apr 2008 13:27:14 (GMT)
A-Squared Found nothing
AntiVir Found nothing
ArcaVir Found nothing
Avast Found nothing
AVG Antivirus Found nothing
BitDefender Found nothing
ClamAV Found nothing
CPsecure Found nothing
Dr.Web Found nothing
F-Prot Antivirus Found nothing
F-Secure Anti-Virus Found nothing
Fortinet Found nothing
Ikarus Found nothing
Kaspersky Anti-Virus Found nothing
NOD32 Found nothing
Norman Virus Control Found nothing
Panda Antivirus Found nothing
Sophos Antivirus Found nothing
VirusBuster Found nothing
VBA32 Found nothing
File: mpdata.rar
Status: OK
MD5: c6477c7ba346da007888e6a0bc6442be
Packers detected: -
Bit9 reports: File not found
Scanner results
Scan taken on 24 Apr 2008 13:29:58 (GMT)
A-Squared Found nothing
AntiVir Found nothing
ArcaVir Found nothing
Avast Found nothing
AVG Antivirus Found nothing
BitDefender Found nothing
ClamAV Found nothing
CPsecure Found nothing
Dr.Web Found nothing
F-Prot Antivirus Found nothing
F-Secure Anti-Virus Found nothing
Fortinet Found nothing
Ikarus Found nothing
Kaspersky Anti-Virus Found nothing
NOD32 Found nothing
Norman Virus Control Found nothing
Panda Antivirus Found nothing
Sophos Antivirus Found nothing
VirusBuster Found nothing
VBA32 Found nothing