My friend has a copy of Windows XP Home Upgrade Edition. I have a serial for XP Home retail but no disk, and have had to reinstall XP a lot due to problems. Continually installing 98SE and then XP overtop of it, and then de- and re-activating XP has been an extremely process. Is there a way I could modify the XP Upgrade to use my XP Home retail CD Key and then add in the corporate files? Could someone please help me with this? Thanks.