I work at an office that has AutoCAD 2007 on Macs running Windows Vista via Bootcamp. We are experiencing a variety of problems, but the most nagging is when AutoCAD drops its activation after about a week or so. I am told by a representative that this is due to the fact that AutoCAD 2007 was not designed for Vista and that we should be running a virtual version of Windows XP, from our Vista software. Does anyone have any insights regarding this problem? We are a small office that cannot afford to upgrade, right now, unfortunately.