Hello, I've a Microsoft Dreamspark account and a Windows XP SP3 key from the same. I've installed it on my PC (also activated) and I used the same key and CD to install it on my cousin's PC (but not activated). 1. Now, if I activate XP on his PC, will that cause a problem? 2. Are keys somehow tied to ISO files? If no, can I just get a new Dreamspark key and replace the old one which I gave during installation? 3. Should I just re-install the OS on his PC with a completely new CD? 4. What are the options available to me at this point?