I have a Windows XP Pro SP1 CD, and tried to slipstream it, and got this error "This service pack cannot be integrated into a destination that also has integrated software updates" I googled around and apparently according to this page http://www.annoyances.org/exec/show/pcmag_recovery, you can't slipstream an SP1 CD, onyl an original XP disc. "You're trying to slipstream SP2 onto a CD that already has SP1. This process only works with the original version of Windows XP." Do I ahve any options apart from buying another copy of XP?