Here I will tell you a method to activate your windows xp permanently no need to have any WGA crack.
You need to have a tool called RockXP
download it here[Link removed on request. Copyright issues]
Extract it you have now two files
RockXP4.exe and a text file
open the tool RockXP4.exe and you will see a dialogue click on I Agree
Click on the Windows key tab
Following the instructions as given below
You can check the windows for its genuinity on the Microsoft Genuine site
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