*New in Windows 7 Professional.
**Windows XP Mode requires either original equipment manufacturer (OEM) preinstallation or postpurchase installation of Windows XP Mode (which runs on Windows 7 Professional or Windows 7 Ultimate) or a virtualization technology such as Windows Virtual PC. Windows XP Mode requires a PC with 2 GB of RAM (32-bit) or 3 GB RAM (64-bit), 15 GB available disk space, and a processor capable of hardware virtualization, with Intel VT or AMD-V turned on. Both Windows XP Mode and Windows Virtual PC can be downloaded from http://www.microsoft.com/windows/virtual-pc. For more information on system requirements, go to http://www.microsoft.com/windows/virtual-pc.
*** Additional hardware may be required. Not available in all countries.
****Requires download of Windows XP Mode (which runs on Windows 7 Professional or Windows 7 Ultimate) and virtualization technology such as Windows Virtual PC. Both Windows XP Mode and Windows Virtual PC, can be downloaded, from http://www.microsoft.com/windows/virtual-pc.