I recently installed Windows Media Center Edition from my Dell PC to my Mac. Everything was working all right but I couldn't activate it. As I understood later it was illegal to do that which is a bit weird to me that I gotta buy a separate copy of Windows for each computer but that's the way . Now the 30 day trial is over and cannot log in anymore. I guess I will have to reinstall when I get my XP. Is there any way to reinstall without losing what I have already. And is it gonna be a problem to reinstall on the first place or I have to erase the partition first. Thank you.