VirtualBox is flexible enough to handle many types of 32-bit and 64-bit configurations. If you need to run a 32-bit version of XP in a 64-bit host, you can do that without any problems.

Although we're using Windows 7 64-bit as our base OS, VirtualBox runs on nearly any OS, and these tips and tricks are applicable to any serious VirtualBox setup.

Boot Camp Install If you own a Mac, you’re looking at a Boot Camp installation of 7. Both 32-bit and 64-bit versions can work, but older Macs are best sticking to the 32-bit version.

Microsoft’s public beta of Windows 7 is similar enough to Vista that it is fairly easy to install on a Mac, either using BootCamp to install it natively, or within a virtual environment. Here ...