Sorry to ask such a basic and dumb question, but I've never actually tried this, so I need to know before I do it. I just got a new laptop which came with Windows 7 Home Premium pre-installed. No CD/DVD media, just a partition. If I replace the HD, can I use the Key on the bottom of the computer to re-install Windows 7 Home Premium from the ISO I downloaded? Sorry, I know it's dumb, and I'm sure all of you know this, but I don't know if that's the install key that will activate my Windows 7 Home Premium or not, so before I get stuck, I had to risk the embarassment of the question. I'm a newb to Windows 7 this year. Mostly been using Ubuntu, BSD, or MacOS X variants, so please... don't laugh too hard!