Ravaged Beta key I found and a code forEnd of Nations Beta

So I started looking through my emails on an older mail account and I stumbled upon an earlyer beta key I apparently won. Since I already have a key and from what I know making giveaways for beta keys isn't allowed, and I'm to lazy to make a puzzle giveaway, I'm posting the key here for the first who sees it to get it.

So here's the key: Q5LVI-M9489-6TZEW

Alright, it seems there's more... I apparently won a beta key for END OF NATIONS, and since I have a bit of trouble playing the demo for XCOM Enemy Unknown, the first one who helps me get the game started will get the key. The problem with the demo is this: After I installed it, then all the redistribuables in the game folder in the Steam\commonapps\xcom, the n restarted the computer, then do an integrity check of the installed files, It still does the same thing, I mean nothing. I launch the game and after the 1-2 seconds while the "Preparing to launch game" windows appears, nothing happens, the game doesn't launch, no error message appears, nothing. What can I do?

So, it seems the demo doesn't run on XP, but works well on Vista so here it is, the

END OF NATIONS BETA CODE: GWJY-HMYX-PFQL-F7YC-77NC