Hi VLk!
Well, that's the key we use in the work, i dont know if it's illegal, the IT admin gave that key to us. But i suposse it can be illegal because it last more than 3 years. So, thanks! In my house i have free edition, but here at work they have been telling us to upgrade to 5 pro just by installing on top of 4 pro. But guess what. We can't, because it's an illegal key. Hehehehehe. Take care pal! And thanks for the advice. Maybe they just bought the key through ebay, or something.