Actually, it'd still be illegal for you to buy the full pro edition then download a corp edition online. The liscense you paid for was specifically for the pro edition, and I'm pretty certain that somewhere in the EULA for the pro edition it says you HAVE to register for an activation key, basically meaning you're not allowed to try and circumvent it at all. Now obviously, most people are not going to care but *technically* it is still illegal. I personally think this method is a somewhat moral way to get past the activation, certainly better than just downloading it off the internet and never giving Microsoft a cent. I know, I've looked into it myself! 😀 But don't worry, I ended up going legit in the end.