My friend got a voucher code with his ATI card to download dirt 2 from steam when it comes out, but he doesn't want the game. If he gives it to me, would I be able to buy the game normally, or does it do some sort of hardware check to verify that I have an ATI card? Since I don't, I don't want to end up ruining the key or getting into some kind of trouble if there's an issue here.