A friend's mobo got fried so we're installing a new one. Of course the mobo is different. So what I'm trying to figure out is if it would be possible to plop this hard drive in the PC with the new mobo and how XP will handle that. I'm guessing it's not a good idea. I'm assuming that all of the mobo specific hardware that was installed when XP was installed on the old mobo will remain in XP and cause conflicts with the hardware from the new mobo. If I'm wrong let me know. I was wondering if following through with Fred Langa's reinstall of XP over itself, which is similar to reinstalling Windows 98 over itself in that it keeps all installed programs working, would work. Again, let me know what you think. Thanks.