Download this:
Code:
http://rapidshare.com/files/87793338/Windows_XP_CD_Key_and_Product_ID_Changer.rar.html
1. Open Windows XP CD Key and Product ID Changer.exe
2. Click Reactivate!
3. Select the second option "by phone"
4. Click "Change Product Key" (situated down)
5. Write this code: "F3FBH-YD2JB-FF4D4-CX4HG-Y4DD6"
6. Press update
7. Restart your computer
8. Enter again Windows XP CD Key and Product ID Changer.exe
9. Click "verify"
10. If it sayds that you are already activated you can run windows update with no problems!