I don't get it, with SP3 you should be able to install XP without a license key. But whenever I slipstream SP3 to my XP CD, I have to input a key, it won't work without a key. So my question is, do I have to wait for the final or do a have to buy a XP CD with SP3? Did somebody slipstream SP3 RC2 and does the installation work without a license key?