Mike,

I am running the Windoze version of BIAB 2010 via a USB drive by way of VMWare Fusion 2 and XP Pro on a MacBookPro with no problems.

I presume that one could also use Boot Camp to do the same, but I don't like to have to reboot. With VMWare Fusion, I have most of the Windows functionality I need.

With VMWare Fusion, and Apple going to the Intel platform, the old platform flame wars is pretty much dead, IMO.