I lost the CD for my WinXP Installation Disk. I know it's real common to lose the key, but in my case that's the thing I have. What I don't have is the disk itself, and I need it in order to re-install XP on a machine that just lost it's Hard Drive. I've read a bit about Product Key "Identifiers", but I already know my key. And I've got a copy of XP available to use, but it's not mine and it's not legal. So what I would like to do is take the "data" from the CD that isn't mine, and change it's Product Key to that of the one I legally own, and create another WinXP disk. This seems like it would be a pretty common thing to want to do (given that the XP product code was stuck to the box XP came in), but I can't find out how to do it. Also, my "skill set" includes using Nero and Alcohol and a few other of the more common CD utilities, so if the advise could be geared to what I already know, I would be most appreciative. Thanks in advance, Johnny