Fann þetta á netinu!!
I can verify that the MBox works fine with Windows7x64 with no trickery, other than downloading the standalone 7.4 audio drivers first, restarting your computer, installing Pro Tools LE v8.0 and restarting again. Don't forget to make sure you have QT installed, otherwise it will scream at you for being the worst human on the planet (or a Windows user...).