I am going to go over to a friends house tonight to help her install Win7. Her media isn't going to get her until tomorrow but I can only help tonight. I was going to use my Win7 DVD I made from instructions here to install, and just not use a product key so she can enter that in later. If I use my media and install the matching version to what she bought, will her key work? I'm only unsure because this is a "Student Select" license and I don't know if there is a difference in the media. Thanks!