My HD was corrupted so I ended up having to wipe it and decided to install Win 7 off my friends school disc, as my school has yet to respond to me about getting one. Since he used the key already I had to go online and find a keygen, but when I enter the code given Win7 is tell me that the letters L, O, R, E and a ton of others are all unacceptable characters. Anyone know what that's about? Are all the activation codes really devoid of these letters?