How to activate windows xp sp3 without a key

This is a simple dll file which does the trick for you

Download link

mediafire antiwpa.dll

HowTo

Copy the dll file to windows system32 (c://windows/system32).

Open the windows command prompt typing "cmd" in Windows->Run.

Register the dll file via typing the below command in command prompt.

regsvr32 ANTIWPA.DLL

And that's it .Your windows is now activated.