as I know..Windows 8 RTM is the final version and I really wanna make it my main operation system. But I have some questions.. What is that KMS Server? and why we can't fully activate Windows 8? When we are gonna see a working activator like Daz loader? It's true that we can't customize the desktop or change things if the windows are not fully activated? It's really recommended for a main operation system? Thank you.