I am going to be upgrading my motherboard soon. I have XP Home edition on my system. The original XP software I have is the upgrade version from Win98. This was installed about 2 years ago. I was told I'm going to have to rebuild my C drive after replacing the MOBO. I also have an OEM WinXP Pro full version I use on my laptop. My question is, after the upgrade can I do a repair from either of those instead of completely reloading XP? If so, which one and how would you suggest I procede?