k so i installed xp turns out the copy i got was already activated, my times up and needs to be activated but i can click on microsoft website help thing from the activation screen which can get me to the inet through there i can open up my start and get into dos for about a minute, when in dos i try and format my hardrive it wont work. what commands should i be using, all i have is a drive C:/ the other two are cd and burner any advice would help