I have no idea if I'm allowed to do this, but I am selling a very lightly used version of Windows 7 Home Premium Full Edition. I used it once for my Macbook Pro, but haven't bothered using it on other machines. I believe you can install it onto 3 machines, so 1/3 has been used. Again, I have no idea if I'm allowed to sell this, so I'm going to just double check before I post pictures and pricing. If you are interested, please let me know.