Hi, I've just bought a Dell XPS 13 with Windows 8 preinstalled. I need to format and install Windows 7. I have some questions : 1. Does this laptop come with a DELL SLIC 2.2 ? 2. Can I activate Windows 7 using this SLIC ? How ? I mean... I know how to activate, but what certificate files, etc do I need to use to make it work ?