Good reminder, which is why I bit the bullet and bought the retail Home Premium Windows 7. With the way I tend to reinstall it made sense for me anyway. Once your installs on the OEM version are used up (5 only I believe) you can still call Microsoft and get a new code pretty much as much as you like, at least thats what I found with Vista Ultimate. However, it does get to be a hassle which if like me; you will soon tire of. The retail version does have it's good points, even if the total amount of them is only one.