I know you can upgrade, but I am wondering if I can install Windows XP over my current windows XP install. The reason I ask is that I am actually running what I will slyly call a corporate install of XP. I do own, and have always owned, a legit copy of XP. I just never felt like dealing with product activation. But from what I understand its really not that big of a deal. Now I have not been able to get SP2 due to this, plus I hear MS may stop allowing for anything but critical updates to people with illegal copies of the OS. SO basically I want to get legit. But I don't really feel like having to back up everything, reinstall all my software, and all that junk. SO is it possible to just do an upgrade or something that doesn't require a fresh start?