I installed XP on my new iMac a few weeks ago and was playing around with it because I happened to have XP install discs from my Dell sitting there tempting me. Now I am getting a message saying that I have only 16 days left to use XP before it must be registered or validated or something of that nature. Out of curiosity, does that mean that XP will refuse to boot after that time? Will it have any effect on my ability to boot my Mac? Thanks.