windows activation

i am using REMOVEWAT tool to get my windows activated but i don’t want to use anymore i get legal cd-key so how i can remove it fully and make my windows legit?
Answer #1
use removeWAT and select the restoreWAT option. It will add the anti-genuine problem back then you can go ahead and add your product key
Answer #2
yes but there isn’t appeared restoreWAT it thinks that its not installed but it is