Norton 360 product key
 

so i recently had the vista antispyware 2010 so i reformatted my computer and
now i installed the norton 360 again but if i put the product key in the
norton on my account it will say i have used up all 3 keys is there any way i
can like delete that i used a product key in the first place(i only want it
on 2 machines for right now so when i get a new computer i can also put it in
there).