You can install and use the same key BUT XP sends data to Microsoft upon activation which will kill it -or- get you in trouble. You can get around this but it is illegal - and I have never done it but it's fairly simple. All you need is a copy of XP and the serial. Then, search for the XP activation crack for your particular XP version. Foloow the directions. Basically you will be deleting certain files before installing the OS, and during installation it will prompt for missing files..you will skip those files..after installation the OS cannot activate but it will already be activated and NO REGISTRATION. This I heard from a friend.
