Re-installing in formated computer

[bogohack]

Hi, im just about to format my computer with a new windows 7 installation, i dont know if when i use the key already given to me for the first installation, i will lose the oportunity to installe the software in another computer, how do i re-install, use the same key? thanks

[lotw]

Run program and de-authorize it. That will free up the key again.