Note: This Procedure works Only in Service Pack 2.
Take 5 simple steps to make your Windows XP 100% Genuine
1st Step:Download MGADiag.exe from Microsoft's website for the main purpose of testing after all the steps that your copy of Windows XP is genuine.
3rd Step:Make sure that after installation you delete or rename the data.dat file in the Windows Genuine Advantage folder.You can find the file in the location C:\Documents and Settings\All Users\Application Data\Windows Genuine Advantage\data where C: is drive of the Windows XP installation.
4th Step: Next go to C:\Windows\System32\drivers\etc\ directory, and you will find the 'hosts' file, open it using Notepad or any other text editor and add the line below to the end of the file.
127.0.0.1 mpa.one.microsoft.com
5th Step: Run MGAdiag.exe to see if your copy of Windows XP is now genuine.
