mirrored drive

OK, I have an issue that has the local geek squad saying, "um, I have no clue." I don't ask help much, guy issue I know. Anyway, I have a Sony Vaio VGN-FZ240E that I set up as a dual boot Vista/XP so I can use an older version of Architectural Deskstop on the XP side. I have a mirror of the...